---
_id: '32338'
author:
- first_name: K.
  full_name: Hähn, K.
  last_name: Hähn
- first_name: Uta
  full_name: Häsel-Weide, Uta
  id: '60267'
  last_name: Häsel-Weide
- first_name: P.
  full_name: Scherer, P.
  last_name: Scherer
citation:
  ama: Hähn K, Häsel-Weide U, Scherer P. Diagnosegeleitete Förderung im inklusiven
    Mathematikunterricht der Grundschule – Professionalisierung durch reflektierte
    Handlungspraxis in der Lehrer*innenbildung. <i>QfI - Qualifizierung für Inklusion</i>.
    2022;3(2).
  apa: Hähn, K., Häsel-Weide, U., &#38; Scherer, P. (2022). Diagnosegeleitete Förderung
    im inklusiven Mathematikunterricht der Grundschule – Professionalisierung durch
    reflektierte Handlungspraxis in der Lehrer*innenbildung. <i>QfI - Qualifizierung
    für Inklusion</i>, <i>3</i>(2).
  bibtex: '@article{Hähn_Häsel-Weide_Scherer_2022, title={Diagnosegeleitete Förderung
    im inklusiven Mathematikunterricht der Grundschule – Professionalisierung durch
    reflektierte Handlungspraxis in der Lehrer*innenbildung.}, volume={3}, number={2},
    journal={QfI - Qualifizierung für Inklusion}, author={Hähn, K. and Häsel-Weide,
    Uta and Scherer, P.}, year={2022} }'
  chicago: Hähn, K., Uta Häsel-Weide, and P. Scherer. “Diagnosegeleitete Förderung
    im inklusiven Mathematikunterricht der Grundschule – Professionalisierung durch
    reflektierte Handlungspraxis in der Lehrer*innenbildung.” <i>QfI - Qualifizierung
    für Inklusion</i> 3, no. 2 (2022).
  ieee: K. Hähn, U. Häsel-Weide, and P. Scherer, “Diagnosegeleitete Förderung im inklusiven
    Mathematikunterricht der Grundschule – Professionalisierung durch reflektierte
    Handlungspraxis in der Lehrer*innenbildung.,” <i>QfI - Qualifizierung für Inklusion</i>,
    vol. 3, no. 2, 2022.
  mla: Hähn, K., et al. “Diagnosegeleitete Förderung im inklusiven Mathematikunterricht
    der Grundschule – Professionalisierung durch reflektierte Handlungspraxis in der
    Lehrer*innenbildung.” <i>QfI - Qualifizierung für Inklusion</i>, vol. 3, no. 2,
    2022.
  short: K. Hähn, U. Häsel-Weide, P. Scherer, QfI - Qualifizierung für Inklusion 3
    (2022).
date_created: 2022-07-11T05:13:52Z
date_updated: 2022-07-11T05:31:41Z
department:
- _id: '98'
- _id: '543'
intvolume: '         3'
issue: '2'
language:
- iso: ger
publication: QfI - Qualifizierung für Inklusion
publication_status: published
related_material:
  link:
  - relation: contains
    url: https://doi.org/10.21248/qfi.72
status: public
title: Diagnosegeleitete Förderung im inklusiven Mathematikunterricht der Grundschule
  – Professionalisierung durch reflektierte Handlungspraxis in der Lehrer*innenbildung.
type: journal_article
user_id: '85821'
volume: 3
year: '2022'
...
---
_id: '29673'
abstract:
- lang: eng
  text: Koopman operator theory has been successfully applied to problems from various
    research areas such as fluid dynamics, molecular dynamics, climate science, engineering,
    and biology. Applications include detecting metastable or coherent sets, coarse-graining,
    system identification, and control. There is an intricate connection between dynamical
    systems driven by stochastic differential equations and quantum mechanics. In
    this paper, we compare the ground-state transformation and Nelson's stochastic
    mechanics and demonstrate how data-driven methods developed for the approximation
    of the Koopman operator can be used to analyze quantum physics problems. Moreover,
    we exploit the relationship between Schrödinger operators and stochastic control
    problems to show that modern data-driven methods for stochastic control can be
    used to solve the stationary or imaginary-time Schrödinger equation. Our findings
    open up a new avenue towards solving Schrödinger's equation using recently developed
    tools from data science.
author:
- first_name: Stefan
  full_name: Klus, Stefan
  last_name: Klus
- first_name: Feliks
  full_name: Nüske, Feliks
  id: '81513'
  last_name: Nüske
  orcid: 0000-0003-2444-7889
- first_name: Sebastian
  full_name: Peitz, Sebastian
  id: '47427'
  last_name: Peitz
  orcid: 0000-0002-3389-793X
citation:
  ama: 'Klus S, Nüske F, Peitz S. Koopman analysis of quantum systems. <i>Journal
    of Physics A: Mathematical and Theoretical</i>. 2022;55(31):314002. doi:<a href="https://doi.org/10.1088/1751-8121/ac7d22">10.1088/1751-8121/ac7d22</a>'
  apa: 'Klus, S., Nüske, F., &#38; Peitz, S. (2022). Koopman analysis of quantum systems.
    <i>Journal of Physics A: Mathematical and Theoretical</i>, <i>55</i>(31), 314002.
    <a href="https://doi.org/10.1088/1751-8121/ac7d22">https://doi.org/10.1088/1751-8121/ac7d22</a>'
  bibtex: '@article{Klus_Nüske_Peitz_2022, title={Koopman analysis of quantum systems},
    volume={55}, DOI={<a href="https://doi.org/10.1088/1751-8121/ac7d22">10.1088/1751-8121/ac7d22</a>},
    number={31}, journal={Journal of Physics A: Mathematical and Theoretical}, publisher={IOP
    Publishing Ltd.}, author={Klus, Stefan and Nüske, Feliks and Peitz, Sebastian},
    year={2022}, pages={314002} }'
  chicago: 'Klus, Stefan, Feliks Nüske, and Sebastian Peitz. “Koopman Analysis of
    Quantum Systems.” <i>Journal of Physics A: Mathematical and Theoretical</i> 55,
    no. 31 (2022): 314002. <a href="https://doi.org/10.1088/1751-8121/ac7d22">https://doi.org/10.1088/1751-8121/ac7d22</a>.'
  ieee: 'S. Klus, F. Nüske, and S. Peitz, “Koopman analysis of quantum systems,” <i>Journal
    of Physics A: Mathematical and Theoretical</i>, vol. 55, no. 31, p. 314002, 2022,
    doi: <a href="https://doi.org/10.1088/1751-8121/ac7d22">10.1088/1751-8121/ac7d22</a>.'
  mla: 'Klus, Stefan, et al. “Koopman Analysis of Quantum Systems.” <i>Journal of
    Physics A: Mathematical and Theoretical</i>, vol. 55, no. 31, IOP Publishing Ltd.,
    2022, p. 314002, doi:<a href="https://doi.org/10.1088/1751-8121/ac7d22">10.1088/1751-8121/ac7d22</a>.'
  short: 'S. Klus, F. Nüske, S. Peitz, Journal of Physics A: Mathematical and Theoretical
    55 (2022) 314002.'
date_created: 2022-01-31T09:49:40Z
date_updated: 2022-07-18T14:26:41Z
department:
- _id: '655'
- _id: '101'
doi: 10.1088/1751-8121/ac7d22
external_id:
  arxiv:
  - '2201.12062'
intvolume: '        55'
issue: '31'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://iopscience.iop.org/article/10.1088/1751-8121/ac7d22/pdf
oa: '1'
page: '314002'
publication: 'Journal of Physics A: Mathematical and Theoretical'
publication_status: published
publisher: IOP Publishing Ltd.
status: public
title: Koopman analysis of quantum systems
type: journal_article
user_id: '47427'
volume: 55
year: '2022'
...
---
_id: '34618'
abstract:
- lang: eng
  text: "In this article, we show how second-order derivative information can be\r\nincorporated
    into gradient sampling methods for nonsmooth optimization. The\r\nsecond-order
    information we consider is essentially the set of coefficients of\r\nall second-order
    Taylor expansions of the objective in a closed ball around a\r\ngiven point. Based
    on this concept, we define a model of the objective as the\r\nmaximum of these
    Taylor expansions. Iteratively minimizing this model\r\n(constrained to the closed
    ball) results in a simple descent method, for which\r\nwe prove convergence to
    minimal points in case the objective is convex. To\r\nobtain an implementable
    method, we construct an approximation scheme for the\r\nsecond-order information
    based on sampling objective values, gradients and\r\nHessian matrices at finitely
    many points. Using a set of test problems, we\r\ncompare the resulting method
    to five other available solvers. Considering the\r\nnumber of function evaluations,
    the results suggest that the method we propose\r\nis superior to the standard
    gradient sampling method, and competitive compared\r\nto other methods."
author:
- first_name: Bennet
  full_name: Gebken, Bennet
  id: '32643'
  last_name: Gebken
citation:
  ama: Gebken B. Using second-order information in gradient sampling methods for 
    nonsmooth optimization. <i>arXiv:221004579</i>. Published online 2022.
  apa: Gebken, B. (2022). Using second-order information in gradient sampling methods
    for  nonsmooth optimization. In <i>arXiv:2210.04579</i>.
  bibtex: '@article{Gebken_2022, title={Using second-order information in gradient
    sampling methods for  nonsmooth optimization}, journal={arXiv:2210.04579}, author={Gebken,
    Bennet}, year={2022} }'
  chicago: Gebken, Bennet. “Using Second-Order Information in Gradient Sampling Methods
    for  Nonsmooth Optimization.” <i>ArXiv:2210.04579</i>, 2022.
  ieee: B. Gebken, “Using second-order information in gradient sampling methods for 
    nonsmooth optimization,” <i>arXiv:2210.04579</i>. 2022.
  mla: Gebken, Bennet. “Using Second-Order Information in Gradient Sampling Methods
    for  Nonsmooth Optimization.” <i>ArXiv:2210.04579</i>, 2022.
  short: B. Gebken, ArXiv:2210.04579 (2022).
date_created: 2022-12-20T15:25:17Z
date_updated: 2022-12-20T15:28:54Z
department:
- _id: '101'
external_id:
  arxiv:
  - '2210.04579'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/pdf/2210.04579
oa: '1'
publication: arXiv:2210.04579
status: public
title: Using second-order information in gradient sampling methods for  nonsmooth
  optimization
type: preprint
user_id: '32643'
year: '2022'
...
---
_id: '34792'
article_type: original
author:
- first_name: Helge
  full_name: Glöckner, Helge
  id: '178'
  last_name: Glöckner
citation:
  ama: Glöckner H. Non-Lie subgroups in Lie groups over local fields of positive characteristic.
    <i>p-Adic Numbers, Ultrametric Analysis, and Applications</i>. 2022;14(2):138–144.
    doi:<a href="https://doi.org/10.1134/S2070046622020042">10.1134/S2070046622020042</a>
  apa: Glöckner, H. (2022). Non-Lie subgroups in Lie groups over local fields of positive
    characteristic. <i>P-Adic Numbers, Ultrametric Analysis, and Applications</i>,
    <i>14</i>(2), 138–144. <a href="https://doi.org/10.1134/S2070046622020042">https://doi.org/10.1134/S2070046622020042</a>
  bibtex: '@article{Glöckner_2022, title={Non-Lie subgroups in Lie groups over local
    fields of positive characteristic}, volume={14}, DOI={<a href="https://doi.org/10.1134/S2070046622020042">10.1134/S2070046622020042</a>},
    number={2}, journal={p-Adic Numbers, Ultrametric Analysis, and Applications},
    author={Glöckner, Helge}, year={2022}, pages={138–144} }'
  chicago: 'Glöckner, Helge. “Non-Lie Subgroups in Lie Groups over Local Fields of
    Positive Characteristic.” <i>P-Adic Numbers, Ultrametric Analysis, and Applications</i>
    14, no. 2 (2022): 138–144. <a href="https://doi.org/10.1134/S2070046622020042">https://doi.org/10.1134/S2070046622020042</a>.'
  ieee: 'H. Glöckner, “Non-Lie subgroups in Lie groups over local fields of positive
    characteristic,” <i>p-Adic Numbers, Ultrametric Analysis, and Applications</i>,
    vol. 14, no. 2, pp. 138–144, 2022, doi: <a href="https://doi.org/10.1134/S2070046622020042">10.1134/S2070046622020042</a>.'
  mla: Glöckner, Helge. “Non-Lie Subgroups in Lie Groups over Local Fields of Positive
    Characteristic.” <i>P-Adic Numbers, Ultrametric Analysis, and Applications</i>,
    vol. 14, no. 2, 2022, pp. 138–144, doi:<a href="https://doi.org/10.1134/S2070046622020042">10.1134/S2070046622020042</a>.
  short: H. Glöckner, P-Adic Numbers, Ultrametric Analysis, and Applications 14 (2022)
    138–144.
date_created: 2022-12-21T19:27:51Z
date_updated: 2022-12-21T19:30:25Z
department:
- _id: '10'
- _id: '87'
- _id: '93'
doi: 10.1134/S2070046622020042
intvolume: '        14'
issue: '2'
keyword:
- 20Exx
- 22Exx
- 32Cxx
language:
- iso: eng
page: 138–144
publication: p-Adic Numbers, Ultrametric Analysis, and Applications
publication_identifier:
  issn:
  - 2070-0466
quality_controlled: '1'
status: public
title: Non-Lie subgroups in Lie groups over local fields of positive characteristic
type: journal_article
user_id: '178'
volume: 14
year: '2022'
...
---
_id: '34791'
article_type: original
author:
- first_name: Helge
  full_name: Glöckner, Helge
  id: '178'
  last_name: Glöckner
- first_name: Alexander
  full_name: Schmeding, Alexander
  last_name: Schmeding
citation:
  ama: Glöckner H, Schmeding A. Manifolds of mappings on Cartesian products. <i>Annals
    of Global Analysis and Geometry</i>. 2022;61(2):359–398. doi:<a href="https://doi.org/10.1007/s10455-021-09816-y">10.1007/s10455-021-09816-y</a>
  apa: Glöckner, H., &#38; Schmeding, A. (2022). Manifolds of mappings on Cartesian
    products. <i>Annals of Global Analysis and Geometry</i>, <i>61</i>(2), 359–398.
    <a href="https://doi.org/10.1007/s10455-021-09816-y">https://doi.org/10.1007/s10455-021-09816-y</a>
  bibtex: '@article{Glöckner_Schmeding_2022, title={Manifolds of mappings on Cartesian
    products}, volume={61}, DOI={<a href="https://doi.org/10.1007/s10455-021-09816-y">10.1007/s10455-021-09816-y</a>},
    number={2}, journal={Annals of Global Analysis and Geometry}, author={Glöckner,
    Helge and Schmeding, Alexander}, year={2022}, pages={359–398} }'
  chicago: 'Glöckner, Helge, and Alexander Schmeding. “Manifolds of Mappings on Cartesian
    Products.” <i>Annals of Global Analysis and Geometry</i> 61, no. 2 (2022): 359–398.
    <a href="https://doi.org/10.1007/s10455-021-09816-y">https://doi.org/10.1007/s10455-021-09816-y</a>.'
  ieee: 'H. Glöckner and A. Schmeding, “Manifolds of mappings on Cartesian products,”
    <i>Annals of Global Analysis and Geometry</i>, vol. 61, no. 2, pp. 359–398, 2022,
    doi: <a href="https://doi.org/10.1007/s10455-021-09816-y">10.1007/s10455-021-09816-y</a>.'
  mla: Glöckner, Helge, and Alexander Schmeding. “Manifolds of Mappings on Cartesian
    Products.” <i>Annals of Global Analysis and Geometry</i>, vol. 61, no. 2, 2022,
    pp. 359–398, doi:<a href="https://doi.org/10.1007/s10455-021-09816-y">10.1007/s10455-021-09816-y</a>.
  short: H. Glöckner, A. Schmeding, Annals of Global Analysis and Geometry 61 (2022)
    359–398.
date_created: 2022-12-21T19:24:48Z
date_updated: 2022-12-21T19:27:09Z
department:
- _id: '10'
- _id: '87'
- _id: '93'
doi: 10.1007/s10455-021-09816-y
intvolume: '        61'
issue: '2'
keyword:
- 58D15
- '22E65'
- '26E15'
- '26E20'
- '46E40'
- 46T20
- 58A05
language:
- iso: eng
page: 359–398
publication: Annals of Global Analysis and Geometry
publication_identifier:
  issn:
  - 0232-704X
quality_controlled: '1'
status: public
title: Manifolds of mappings on Cartesian products
type: journal_article
user_id: '178'
volume: 61
year: '2022'
...
---
_id: '34796'
abstract:
- lang: eng
  text: 'We prove various results in infinite-dimensional differential calculus that
    relate the differentiability properties of functions and associated operator-valued
    functions (e.g., differentials). The results are applied in two areas: (1) in
    the theory of infinite-dimensional vector bundles, to construct new bundles from
    given ones, such as dual bundles, topological tensor products, infinite direct
    sums, and completions (under suitable hypotheses); (2) in the theory of locally
    convex Poisson vector spaces, to prove continuity of the Poisson bracket and continuity
    of passage from a function to the associated Hamiltonian vector field. Topological
    properties of topological vector spaces are essential for the studies, which allow
    the hypocontinuity of bilinear mappings to be exploited. Notably, we encounter
    kR-spaces and locally convex spaces E such that E&times;E is a kR-space.'
article_type: original
author:
- first_name: Helge
  full_name: Glöckner, Helge
  id: '178'
  last_name: Glöckner
citation:
  ama: Glöckner H. Aspects of differential calculus related to infinite-dimensional
    vector bundles and Poisson vector spaces. <i>Axioms</i>. 2022;11(5). doi:<a href="https://doi.org/10.3390/axioms11050221">10.3390/axioms11050221</a>
  apa: Glöckner, H. (2022). Aspects of differential calculus related to infinite-dimensional
    vector bundles and Poisson vector spaces. <i>Axioms</i>, <i>11</i>(5). <a href="https://doi.org/10.3390/axioms11050221">https://doi.org/10.3390/axioms11050221</a>
  bibtex: '@article{Glöckner_2022, title={Aspects of differential calculus related
    to infinite-dimensional vector bundles and Poisson vector spaces}, volume={11},
    DOI={<a href="https://doi.org/10.3390/axioms11050221">10.3390/axioms11050221</a>},
    number={5}, journal={Axioms}, author={Glöckner, Helge}, year={2022} }'
  chicago: Glöckner, Helge. “Aspects of Differential Calculus Related to Infinite-Dimensional
    Vector Bundles and Poisson Vector Spaces.” <i>Axioms</i> 11, no. 5 (2022). <a
    href="https://doi.org/10.3390/axioms11050221">https://doi.org/10.3390/axioms11050221</a>.
  ieee: 'H. Glöckner, “Aspects of differential calculus related to infinite-dimensional
    vector bundles and Poisson vector spaces,” <i>Axioms</i>, vol. 11, no. 5, 2022,
    doi: <a href="https://doi.org/10.3390/axioms11050221">10.3390/axioms11050221</a>.'
  mla: Glöckner, Helge. “Aspects of Differential Calculus Related to Infinite-Dimensional
    Vector Bundles and Poisson Vector Spaces.” <i>Axioms</i>, vol. 11, no. 5, 2022,
    doi:<a href="https://doi.org/10.3390/axioms11050221">10.3390/axioms11050221</a>.
  short: H. Glöckner, Axioms 11 (2022).
date_created: 2022-12-21T20:02:29Z
date_updated: 2022-12-22T07:31:55Z
department:
- _id: '10'
- _id: '87'
- _id: '93'
doi: 10.3390/axioms11050221
intvolume: '        11'
issue: '5'
language:
- iso: eng
publication: Axioms
publication_identifier:
  issn:
  - 2075-1680
quality_controlled: '1'
status: public
title: Aspects of differential calculus related to infinite-dimensional vector bundles
  and Poisson vector spaces
type: journal_article
user_id: '178'
volume: 11
year: '2022'
...
---
_id: '34804'
abstract:
- lang: eng
  text: "Starting with a finite-dimensional complex Lie algebra, we extend scalars\r\nusing
    suitable commutative topological algebras. We study Birkhoff\r\ndecompositions
    for the corresponding loop groups. Some results remain valid for\r\nloop groups
    with valued in complex Banach-Lie groups."
author:
- first_name: Helge
  full_name: Glöckner, Helge
  id: '178'
  last_name: Glöckner
citation:
  ama: Glöckner H. Birkhoff decompositions for loop groups with coefficient algebras.
    <i>arXiv:220611711</i>. Published online 2022.
  apa: Glöckner, H. (2022). Birkhoff decompositions for loop groups with coefficient
    algebras. In <i>arXiv:2206.11711</i>.
  bibtex: '@article{Glöckner_2022, title={Birkhoff decompositions for loop groups
    with coefficient algebras}, journal={arXiv:2206.11711}, author={Glöckner, Helge},
    year={2022} }'
  chicago: Glöckner, Helge. “Birkhoff Decompositions for Loop Groups with Coefficient
    Algebras.” <i>ArXiv:2206.11711</i>, 2022.
  ieee: H. Glöckner, “Birkhoff decompositions for loop groups with coefficient algebras,”
    <i>arXiv:2206.11711</i>. 2022.
  mla: Glöckner, Helge. “Birkhoff Decompositions for Loop Groups with Coefficient
    Algebras.” <i>ArXiv:2206.11711</i>, 2022.
  short: H. Glöckner, ArXiv:2206.11711 (2022).
date_created: 2022-12-22T07:42:07Z
date_updated: 2022-12-22T07:44:08Z
department:
- _id: '10'
- _id: '87'
- _id: '93'
external_id:
  arxiv:
  - '2206.11711'
language:
- iso: eng
publication: arXiv:2206.11711
status: public
title: Birkhoff decompositions for loop groups with coefficient algebras
type: preprint
user_id: '178'
year: '2022'
...
---
_id: '31556'
abstract:
- lang: ger
  text: Mehrzieloptimierung behandelt Probleme, bei denen mehrere skalare Zielfunktionen
    simultan optimiert werden sollen. Ein Punkt ist in diesem Fall optimal, wenn es
    keinen anderen Punkt gibt, der mindestens genauso gut ist in allen Zielfunktionen
    und besser in mindestens einer Zielfunktion. Ein notwendiges Optimalitätskriterium
    lässt sich über Ableitungsinformationen erster Ordnung der Zielfunktionen herleiten.
    Die Menge der Punkte, die dieses notwendige Kriterium erfüllen, wird als Pareto-kritische
    Menge bezeichnet. Diese Arbeit enthält neue Resultate über Pareto-kritische Mengen
    für glatte und nicht-glatte Mehrzieloptimierungsprobleme, sowohl was deren Berechnung
    betrifft als auch deren Struktur. Im glatten Fall erfolgt die Berechnung über
    ein Fortsetzungsverfahren, im nichtglatten Fall über ein Abstiegsverfahren. Anschließend
    wird die Struktur des Randes der Pareto-kritischen Menge analysiert, welcher aus
    Pareto-kritischen Mengen kleinerer Subprobleme besteht. Schlussendlich werden
    inverse Probleme betrachtet, bei denen zu einer gegebenen Datenmenge ein Zielfunktionsvektor
    gefunden werden soll, für den die Datenpunkte kritisch sind.
- lang: eng
  text: Multiobjective optimization is concerned with the simultaneous optimization
    of multiple scalar-valued functions. In this case, a point is optimal if there
    is no other point that is at least as good in all objectives and better in at
    least one objective. A necessary condition for optimality can be derived based
    on first-order information of the objectives. The set of points that satisfy this
    necessary condition is called the Pareto critical set. This thesis presents new
    results about Pareto critical sets for smooth and nonsmooth multiobjective optimization
    problems, both in terms of their efficient computation and structural properties.
    In the smooth case they are computed via a continuation method and in the nonsmooth
    case via a descent method. Afterwards, the structure of the boundary of the Pareto
    critical set is analyzed, which consists of Pareto critical sets of smaller subproblems.
    Finally, inverse problems are considered, where a data set is given and an objective
    vector is sought for which the data points are critical.
author:
- first_name: Bennet
  full_name: Gebken, Bennet
  id: '32643'
  last_name: Gebken
citation:
  ama: Gebken B. <i>Computation and Analysis of Pareto Critical Sets in Smooth and
    Nonsmooth Multiobjective Optimization</i>.; 2022. doi:<a href="https://doi.org/10.17619/UNIPB/1-1327">10.17619/UNIPB/1-1327</a>
  apa: Gebken, B. (2022). <i>Computation and analysis of Pareto critical sets in smooth
    and nonsmooth multiobjective optimization</i>. <a href="https://doi.org/10.17619/UNIPB/1-1327">https://doi.org/10.17619/UNIPB/1-1327</a>
  bibtex: '@book{Gebken_2022, title={Computation and analysis of Pareto critical sets
    in smooth and nonsmooth multiobjective optimization}, DOI={<a href="https://doi.org/10.17619/UNIPB/1-1327">10.17619/UNIPB/1-1327</a>},
    author={Gebken, Bennet}, year={2022} }'
  chicago: Gebken, Bennet. <i>Computation and Analysis of Pareto Critical Sets in
    Smooth and Nonsmooth Multiobjective Optimization</i>, 2022. <a href="https://doi.org/10.17619/UNIPB/1-1327">https://doi.org/10.17619/UNIPB/1-1327</a>.
  ieee: B. Gebken, <i>Computation and analysis of Pareto critical sets in smooth and
    nonsmooth multiobjective optimization</i>. 2022.
  mla: Gebken, Bennet. <i>Computation and Analysis of Pareto Critical Sets in Smooth
    and Nonsmooth Multiobjective Optimization</i>. 2022, doi:<a href="https://doi.org/10.17619/UNIPB/1-1327">10.17619/UNIPB/1-1327</a>.
  short: B. Gebken, Computation and Analysis of Pareto Critical Sets in Smooth and
    Nonsmooth Multiobjective Optimization, 2022.
date_created: 2022-06-01T06:48:08Z
date_updated: 2022-06-01T07:13:09Z
department:
- _id: '101'
doi: 10.17619/UNIPB/1-1327
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://digital.ub.uni-paderborn.de/hs/download/pdf/6531779
oa: '1'
status: public
supervisor:
- first_name: Michael
  full_name: Dellnitz, Michael
  last_name: Dellnitz
title: Computation and analysis of Pareto critical sets in smooth and nonsmooth multiobjective
  optimization
type: dissertation
user_id: '32643'
year: '2022'
...
---
_id: '33150'
abstract:
- lang: eng
  text: In this article, we build on previous work to present an optimization algorithm
    for nonlinearly constrained multi-objective optimization problems. The algorithm
    combines a surrogate-assisted derivative-free trust-region approach with the filter
    method known from single-objective optimization. Instead of the true objective
    and constraint functions, so-called fully linear models are employed and we show
    how to deal with the gradient inexactness in the composite step setting, adapted
    from single-objective optimization as well. Under standard assumptions, we prove
    convergence of a subset of iterates to a quasi-stationary point and if constraint
    qualifications hold, then the limit point is also a KKT-point of the multi-objective
    problem.
author:
- first_name: Manuel Bastian
  full_name: Berkemeier, Manuel Bastian
  id: '51701'
  last_name: Berkemeier
- first_name: Sebastian
  full_name: Peitz, Sebastian
  id: '47427'
  last_name: Peitz
  orcid: 0000-0002-3389-793X
citation:
  ama: Berkemeier MB, Peitz S. Multi-Objective Trust-Region Filter Method for Nonlinear
    Constraints using Inexact Gradients. <i>arXiv:220812094</i>. Published online
    2022.
  apa: Berkemeier, M. B., &#38; Peitz, S. (2022). Multi-Objective Trust-Region Filter
    Method for Nonlinear Constraints using Inexact Gradients. In <i>arXiv:2208.12094</i>.
  bibtex: '@article{Berkemeier_Peitz_2022, title={Multi-Objective Trust-Region Filter
    Method for Nonlinear Constraints using Inexact Gradients}, journal={arXiv:2208.12094},
    author={Berkemeier, Manuel Bastian and Peitz, Sebastian}, year={2022} }'
  chicago: Berkemeier, Manuel Bastian, and Sebastian Peitz. “Multi-Objective Trust-Region
    Filter Method for Nonlinear Constraints Using Inexact Gradients.” <i>ArXiv:2208.12094</i>,
    2022.
  ieee: M. B. Berkemeier and S. Peitz, “Multi-Objective Trust-Region Filter Method
    for Nonlinear Constraints using Inexact Gradients,” <i>arXiv:2208.12094</i>. 2022.
  mla: Berkemeier, Manuel Bastian, and Sebastian Peitz. “Multi-Objective Trust-Region
    Filter Method for Nonlinear Constraints Using Inexact Gradients.” <i>ArXiv:2208.12094</i>,
    2022.
  short: M.B. Berkemeier, S. Peitz, ArXiv:2208.12094 (2022).
date_created: 2022-08-26T06:08:06Z
date_updated: 2022-08-26T06:12:10Z
department:
- _id: '101'
- _id: '655'
external_id:
  arxiv:
  - '2208.12094'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/pdf/2208.12094
oa: '1'
publication: arXiv:2208.12094
status: public
title: Multi-Objective Trust-Region Filter Method for Nonlinear Constraints using
  Inexact Gradients
type: preprint
user_id: '47427'
year: '2022'
...
---
_id: '20731'
abstract:
- lang: eng
  text: We present a novel algorithm that allows us to gain detailed insight into
    the effects of sparsity in linear and nonlinear optimization, which is of great
    importance in many scientific areas such as image and signal processing, medical
    imaging, compressed sensing, and machine learning (e.g., for the training of neural
    networks). Sparsity is an important feature to ensure robustness against noisy
    data, but also to find models that are interpretable and easy to analyze due to
    the small number of relevant terms. It is common practice to enforce sparsity
    by adding the ℓ1-norm as a weighted penalty term. In order to gain a better understanding
    and to allow for an informed model selection, we directly solve the corresponding
    multiobjective optimization problem (MOP) that arises when we minimize the main
    objective and the ℓ1-norm simultaneously. As this MOP is in general non-convex
    for nonlinear objectives, the weighting method will fail to provide all optimal
    compromises. To avoid this issue, we present a continuation method which is specifically
    tailored to MOPs with two objective functions one of which is the ℓ1-norm. Our
    method can be seen as a generalization of well-known homotopy methods for linear
    regression problems to the nonlinear case. Several numerical examples - including
    neural network training - demonstrate our theoretical findings and the additional
    insight that can be gained by this multiobjective approach.
article_type: original
author:
- first_name: Katharina
  full_name: Bieker, Katharina
  id: '32829'
  last_name: Bieker
- first_name: Bennet
  full_name: Gebken, Bennet
  id: '32643'
  last_name: Gebken
- first_name: Sebastian
  full_name: Peitz, Sebastian
  id: '47427'
  last_name: Peitz
  orcid: 0000-0002-3389-793X
citation:
  ama: Bieker K, Gebken B, Peitz S. On the Treatment of Optimization Problems with
    L1 Penalty Terms via Multiobjective Continuation. <i>IEEE Transactions on Pattern
    Analysis and Machine Intelligence</i>. 2022;44(11):7797-7808. doi:<a href="https://doi.org/10.1109/TPAMI.2021.3114962">10.1109/TPAMI.2021.3114962</a>
  apa: Bieker, K., Gebken, B., &#38; Peitz, S. (2022). On the Treatment of Optimization
    Problems with L1 Penalty Terms via Multiobjective Continuation. <i>IEEE Transactions
    on Pattern Analysis and Machine Intelligence</i>, <i>44</i>(11), 7797–7808. <a
    href="https://doi.org/10.1109/TPAMI.2021.3114962">https://doi.org/10.1109/TPAMI.2021.3114962</a>
  bibtex: '@article{Bieker_Gebken_Peitz_2022, title={On the Treatment of Optimization
    Problems with L1 Penalty Terms via Multiobjective Continuation}, volume={44},
    DOI={<a href="https://doi.org/10.1109/TPAMI.2021.3114962">10.1109/TPAMI.2021.3114962</a>},
    number={11}, journal={IEEE Transactions on Pattern Analysis and Machine Intelligence},
    publisher={IEEE}, author={Bieker, Katharina and Gebken, Bennet and Peitz, Sebastian},
    year={2022}, pages={7797–7808} }'
  chicago: 'Bieker, Katharina, Bennet Gebken, and Sebastian Peitz. “On the Treatment
    of Optimization Problems with L1 Penalty Terms via Multiobjective Continuation.”
    <i>IEEE Transactions on Pattern Analysis and Machine Intelligence</i> 44, no.
    11 (2022): 7797–7808. <a href="https://doi.org/10.1109/TPAMI.2021.3114962">https://doi.org/10.1109/TPAMI.2021.3114962</a>.'
  ieee: 'K. Bieker, B. Gebken, and S. Peitz, “On the Treatment of Optimization Problems
    with L1 Penalty Terms via Multiobjective Continuation,” <i>IEEE Transactions on
    Pattern Analysis and Machine Intelligence</i>, vol. 44, no. 11, pp. 7797–7808,
    2022, doi: <a href="https://doi.org/10.1109/TPAMI.2021.3114962">10.1109/TPAMI.2021.3114962</a>.'
  mla: Bieker, Katharina, et al. “On the Treatment of Optimization Problems with L1
    Penalty Terms via Multiobjective Continuation.” <i>IEEE Transactions on Pattern
    Analysis and Machine Intelligence</i>, vol. 44, no. 11, IEEE, 2022, pp. 7797–808,
    doi:<a href="https://doi.org/10.1109/TPAMI.2021.3114962">10.1109/TPAMI.2021.3114962</a>.
  short: K. Bieker, B. Gebken, S. Peitz, IEEE Transactions on Pattern Analysis and
    Machine Intelligence 44 (2022) 7797–7808.
date_created: 2020-12-15T07:46:36Z
date_updated: 2022-10-21T12:27:16Z
ddc:
- '510'
department:
- _id: '101'
- _id: '530'
- _id: '655'
doi: 10.1109/TPAMI.2021.3114962
file:
- access_level: closed
  content_type: application/pdf
  creator: speitz
  date_created: 2021-09-25T11:59:15Z
  date_updated: 2021-09-25T11:59:15Z
  file_id: '25040'
  file_name: On_the_Treatment_of_Optimization_Problems_with_L1_Penalty_Terms_via_Multiobjective_Continuation.pdf
  file_size: 7990831
  relation: main_file
  success: 1
file_date_updated: 2021-09-25T11:59:15Z
has_accepted_license: '1'
intvolume: '        44'
issue: '11'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9547772
oa: '1'
page: 7797-7808
publication: IEEE Transactions on Pattern Analysis and Machine Intelligence
publication_status: epub_ahead
publisher: IEEE
status: public
title: On the Treatment of Optimization Problems with L1 Penalty Terms via Multiobjective
  Continuation
type: journal_article
user_id: '47427'
volume: 44
year: '2022'
...
---
_id: '35306'
author:
- first_name: Yannick
  full_name: Guedes Bonthonneau, Yannick
  last_name: Guedes Bonthonneau
- first_name: Tobias
  full_name: Weich, Tobias
  id: '49178'
  last_name: Weich
  orcid: 0000-0002-9648-6919
citation:
  ama: Guedes Bonthonneau Y, Weich T. Ruelle–Pollicott resonances for manifolds with
    hyperbolic cusps. <i>Journal of the European Mathematical Society</i>. 2022;24(3):851-923.
    doi:<a href="https://doi.org/10.4171/jems/1103">10.4171/jems/1103</a>
  apa: Guedes Bonthonneau, Y., &#38; Weich, T. (2022). Ruelle–Pollicott resonances
    for manifolds with hyperbolic cusps. <i>Journal of the European Mathematical Society</i>,
    <i>24</i>(3), 851–923. <a href="https://doi.org/10.4171/jems/1103">https://doi.org/10.4171/jems/1103</a>
  bibtex: '@article{Guedes Bonthonneau_Weich_2022, title={Ruelle–Pollicott resonances
    for manifolds with hyperbolic cusps}, volume={24}, DOI={<a href="https://doi.org/10.4171/jems/1103">10.4171/jems/1103</a>},
    number={3}, journal={Journal of the European Mathematical Society}, publisher={European
    Mathematical Society - EMS - Publishing House GmbH}, author={Guedes Bonthonneau,
    Yannick and Weich, Tobias}, year={2022}, pages={851–923} }'
  chicago: 'Guedes Bonthonneau, Yannick, and Tobias Weich. “Ruelle–Pollicott Resonances
    for Manifolds with Hyperbolic Cusps.” <i>Journal of the European Mathematical
    Society</i> 24, no. 3 (2022): 851–923. <a href="https://doi.org/10.4171/jems/1103">https://doi.org/10.4171/jems/1103</a>.'
  ieee: 'Y. Guedes Bonthonneau and T. Weich, “Ruelle–Pollicott resonances for manifolds
    with hyperbolic cusps,” <i>Journal of the European Mathematical Society</i>, vol.
    24, no. 3, pp. 851–923, 2022, doi: <a href="https://doi.org/10.4171/jems/1103">10.4171/jems/1103</a>.'
  mla: Guedes Bonthonneau, Yannick, and Tobias Weich. “Ruelle–Pollicott Resonances
    for Manifolds with Hyperbolic Cusps.” <i>Journal of the European Mathematical
    Society</i>, vol. 24, no. 3, European Mathematical Society - EMS - Publishing
    House GmbH, 2022, pp. 851–923, doi:<a href="https://doi.org/10.4171/jems/1103">10.4171/jems/1103</a>.
  short: Y. Guedes Bonthonneau, T. Weich, Journal of the European Mathematical Society
    24 (2022) 851–923.
date_created: 2023-01-05T16:23:34Z
date_updated: 2023-01-06T08:47:35Z
department:
- _id: '10'
- _id: '623'
- _id: '548'
doi: 10.4171/jems/1103
intvolume: '        24'
issue: '3'
keyword:
- Applied Mathematics
- General Mathematics
language:
- iso: eng
page: 851-923
publication: Journal of the European Mathematical Society
publication_identifier:
  issn:
  - 1435-9855
publication_status: published
publisher: European Mathematical Society - EMS - Publishing House GmbH
status: public
title: Ruelle–Pollicott resonances for manifolds with hyperbolic cusps
type: journal_article
user_id: '49178'
volume: 24
year: '2022'
...
---
_id: '34633'
article_number: '114118'
author:
- first_name: Kerstin
  full_name: Hesse, Kerstin
  id: '42608'
  last_name: Hesse
  orcid: 0000-0003-4125-1941
- first_name: Quoc Thong
  full_name: Le Gia, Quoc Thong
  last_name: Le Gia
citation:
  ama: Hesse K, Le Gia QT. L_2 error estimates for polynomial discrete penalized least-squares
    approximation on the sphere from noisy data. <i>Journal of Computational and Applied
    Mathematics</i>. 2022;408. doi:<a href="https://doi.org/10.1016/j.cam.2022.114118">10.1016/j.cam.2022.114118</a>
  apa: Hesse, K., &#38; Le Gia, Q. T. (2022). L_2 error estimates for polynomial discrete
    penalized least-squares approximation on the sphere from noisy data. <i>Journal
    of Computational and Applied Mathematics</i>, <i>408</i>, Article 114118. <a href="https://doi.org/10.1016/j.cam.2022.114118">https://doi.org/10.1016/j.cam.2022.114118</a>
  bibtex: '@article{Hesse_Le Gia_2022, title={L_2 error estimates for polynomial discrete
    penalized least-squares approximation on the sphere from noisy data}, volume={408},
    DOI={<a href="https://doi.org/10.1016/j.cam.2022.114118">10.1016/j.cam.2022.114118</a>},
    number={114118}, journal={Journal of Computational and Applied Mathematics}, publisher={Elsevier
    BV}, author={Hesse, Kerstin and Le Gia, Quoc Thong}, year={2022} }'
  chicago: Hesse, Kerstin, and Quoc Thong Le Gia. “L_2 Error Estimates for Polynomial
    Discrete Penalized Least-Squares Approximation on the Sphere from Noisy Data.”
    <i>Journal of Computational and Applied Mathematics</i> 408 (2022). <a href="https://doi.org/10.1016/j.cam.2022.114118">https://doi.org/10.1016/j.cam.2022.114118</a>.
  ieee: 'K. Hesse and Q. T. Le Gia, “L_2 error estimates for polynomial discrete penalized
    least-squares approximation on the sphere from noisy data,” <i>Journal of Computational
    and Applied Mathematics</i>, vol. 408, Art. no. 114118, 2022, doi: <a href="https://doi.org/10.1016/j.cam.2022.114118">10.1016/j.cam.2022.114118</a>.'
  mla: Hesse, Kerstin, and Quoc Thong Le Gia. “L_2 Error Estimates for Polynomial
    Discrete Penalized Least-Squares Approximation on the Sphere from Noisy Data.”
    <i>Journal of Computational and Applied Mathematics</i>, vol. 408, 114118, Elsevier
    BV, 2022, doi:<a href="https://doi.org/10.1016/j.cam.2022.114118">10.1016/j.cam.2022.114118</a>.
  short: K. Hesse, Q.T. Le Gia, Journal of Computational and Applied Mathematics 408
    (2022).
date_created: 2022-12-20T17:37:16Z
date_updated: 2023-01-09T08:23:56Z
department:
- _id: '10'
doi: 10.1016/j.cam.2022.114118
intvolume: '       408'
keyword:
- Applied Mathematics
- Computational Mathematics
language:
- iso: eng
publication: Journal of Computational and Applied Mathematics
publication_identifier:
  issn:
  - 0377-0427
publication_status: published
publisher: Elsevier BV
status: public
title: L_2 error estimates for polynomial discrete penalized least-squares approximation
  on the sphere from noisy data
type: journal_article
user_id: '14931'
volume: 408
year: '2022'
...
---
_id: '34817'
article_type: original
author:
- first_name: Maximilian
  full_name: Hanusch, Maximilian
  id: '30905'
  last_name: Hanusch
citation:
  ama: Hanusch M. Regularity of Lie groups. <i>Communications in Analysis and Geometry</i>.
    2022;30(1):53-152. doi:<a href="https://doi.org/10.4310/cag.2022.v30.n1.a2">10.4310/cag.2022.v30.n1.a2</a>
  apa: Hanusch, M. (2022). Regularity of Lie groups. <i>Communications in Analysis
    and Geometry</i>, <i>30</i>(1), 53–152. <a href="https://doi.org/10.4310/cag.2022.v30.n1.a2">https://doi.org/10.4310/cag.2022.v30.n1.a2</a>
  bibtex: '@article{Hanusch_2022, title={Regularity of Lie groups}, volume={30}, DOI={<a
    href="https://doi.org/10.4310/cag.2022.v30.n1.a2">10.4310/cag.2022.v30.n1.a2</a>},
    number={1}, journal={Communications in Analysis and Geometry}, publisher={International
    Press of Boston}, author={Hanusch, Maximilian}, year={2022}, pages={53–152} }'
  chicago: 'Hanusch, Maximilian. “Regularity of Lie Groups.” <i>Communications in
    Analysis and Geometry</i> 30, no. 1 (2022): 53–152. <a href="https://doi.org/10.4310/cag.2022.v30.n1.a2">https://doi.org/10.4310/cag.2022.v30.n1.a2</a>.'
  ieee: 'M. Hanusch, “Regularity of Lie groups,” <i>Communications in Analysis and
    Geometry</i>, vol. 30, no. 1, pp. 53–152, 2022, doi: <a href="https://doi.org/10.4310/cag.2022.v30.n1.a2">10.4310/cag.2022.v30.n1.a2</a>.'
  mla: Hanusch, Maximilian. “Regularity of Lie Groups.” <i>Communications in Analysis
    and Geometry</i>, vol. 30, no. 1, International Press of Boston, 2022, pp. 53–152,
    doi:<a href="https://doi.org/10.4310/cag.2022.v30.n1.a2">10.4310/cag.2022.v30.n1.a2</a>.
  short: M. Hanusch, Communications in Analysis and Geometry 30 (2022) 53–152.
date_created: 2022-12-22T09:19:43Z
date_updated: 2023-01-09T18:07:30Z
department:
- _id: '93'
doi: 10.4310/cag.2022.v30.n1.a2
extern: '1'
intvolume: '        30'
issue: '1'
keyword:
- regularity of Lie groups
language:
- iso: eng
page: 53-152
publication: Communications in Analysis and Geometry
publication_identifier:
  issn:
  - 1019-8385
  - 1944-9992
publication_status: published
publisher: International Press of Boston
status: public
title: Regularity of Lie groups
type: journal_article
user_id: '30905'
volume: 30
year: '2022'
...
---
_id: '34856'
author:
- first_name: Maximilian
  full_name: Hanusch, Maximilian
  id: '30905'
  last_name: Hanusch
citation:
  ama: Hanusch M. <i>Analysis 1 und 2 Skript/Buch</i>. https://maximilianhanusch.wixsite.com/my-site/lehre-teaching
  apa: Hanusch, M. (n.d.). <i>Analysis 1 und 2 Skript/Buch</i>. https://maximilianhanusch.wixsite.com/my-site/lehre-teaching.
  bibtex: '@book{Hanusch, title={Analysis 1 und 2 Skript/Buch}, publisher={https://maximilianhanusch.wixsite.com/my-site/lehre-teaching},
    author={Hanusch, Maximilian} }'
  chicago: Hanusch, Maximilian. <i>Analysis 1 und 2 Skript/Buch</i>. https://maximilianhanusch.wixsite.com/my-site/lehre-teaching,
    n.d.
  ieee: M. Hanusch, <i>Analysis 1 und 2 Skript/Buch</i>. https://maximilianhanusch.wixsite.com/my-site/lehre-teaching.
  mla: Hanusch, Maximilian. <i>Analysis 1 und 2 Skript/Buch</i>. https://maximilianhanusch.wixsite.com/my-site/lehre-teaching.
  short: M. Hanusch, Analysis 1 und 2 Skript/Buch, https://maximilianhanusch.wixsite.com/my-site/lehre-teaching,
    n.d.
date_created: 2022-12-22T17:06:02Z
date_updated: 2023-01-09T18:07:00Z
department:
- _id: '93'
language:
- iso: ger
page: '385'
publication_status: draft
publisher: https://maximilianhanusch.wixsite.com/my-site/lehre-teaching
status: public
title: Analysis 1 und 2 Skript/Buch
type: working_paper
user_id: '30905'
year: '2022'
...
---
_id: '35644'
author:
- first_name: Martin
  full_name: Kolb, Martin
  id: '48880'
  last_name: Kolb
- first_name: Alexander
  full_name: Klump, Alexander
  id: '45067'
  last_name: Klump
citation:
  ama: Kolb M, Klump A. Uniqueness of the Inverse First Passage Time Problem and the
    Shape of the Shiryaev boundary. <i>Theory of Probability and its Applications</i>.
    2022;67(4):717-744.
  apa: Kolb, M., &#38; Klump, A. (2022). Uniqueness of the Inverse First Passage Time
    Problem and the Shape of the Shiryaev boundary. <i>Theory of Probability and Its
    Applications</i>, <i>67</i>(4), 717–744.
  bibtex: '@article{Kolb_Klump_2022, title={Uniqueness of the Inverse First Passage
    Time Problem and the Shape of the Shiryaev boundary}, volume={67}, number={4},
    journal={Theory of Probability and its Applications}, publisher={Society for Industrial
    and Applied Mathematics}, author={Kolb, Martin and Klump, Alexander}, year={2022},
    pages={717–744} }'
  chicago: 'Kolb, Martin, and Alexander Klump. “Uniqueness of the Inverse First Passage
    Time Problem and the Shape of the Shiryaev Boundary.” <i>Theory of Probability
    and Its Applications</i> 67, no. 4 (2022): 717–44.'
  ieee: M. Kolb and A. Klump, “Uniqueness of the Inverse First Passage Time Problem
    and the Shape of the Shiryaev boundary,” <i>Theory of Probability and its Applications</i>,
    vol. 67, no. 4, pp. 717–744, 2022.
  mla: Kolb, Martin, and Alexander Klump. “Uniqueness of the Inverse First Passage
    Time Problem and the Shape of the Shiryaev Boundary.” <i>Theory of Probability
    and Its Applications</i>, vol. 67, no. 4, Society for Industrial and Applied Mathematics,
    2022, pp. 717–44.
  short: M. Kolb, A. Klump, Theory of Probability and Its Applications 67 (2022) 717–744.
date_created: 2023-01-10T08:13:17Z
date_updated: 2023-01-10T08:13:30Z
department:
- _id: '96'
intvolume: '        67'
issue: '4'
language:
- iso: eng
page: 717-744
publication: Theory of Probability and its Applications
publication_status: published
publisher: Society for Industrial and Applied Mathematics
status: public
title: Uniqueness of the Inverse First Passage Time Problem and the Shape of the Shiryaev
  boundary
type: journal_article
user_id: '85821'
volume: 67
year: '2022'
...
---
_id: '35649'
abstract:
- lang: eng
  text: Motivated by the work [6] of Mariusz Bieniek, Krzysztof Burdzy and Soumik
    Pal we study a Fleming-Viot-type particle system consisting of independently moving
    particles each driven by generalized Bessel processes on the positive real line.
    Upon hitting the boundary {0} this particle is killed and an uniformly chosen
    different one branches into two particles. Using the symmetry of the model and
    the self similarity property of Bessel processes, we obtain a criterion to decide
    whether the particles converge to the origin at a finite time. This addresses
    open problem 1.4 in [6]. Specifically, inspired by [6, Open Problem 1.5], we investigate
    the case of three moving particles and refine the general result of [6, Theorem
    1.1(ii)] extending the regime of drift parameters, where convergence does not
    occur – even to values, where it does occur when considering the case of only
    two particles.
author:
- first_name: Martin
  full_name: Kolb, Martin
  id: '48880'
  last_name: Kolb
- first_name: Matthias
  full_name: Liesenfeld, Matthias
  last_name: Liesenfeld
citation:
  ama: Kolb M, Liesenfeld M. On non-extinction in a Fleming-Viot-type particle model
    with Bessel drift. <i>Electronic Journal of Probability</i>. 2022;(27):1-28. doi:<a
    href="https://doi.org/10.1214/22-EJP866">https://doi.org/10.1214/22-EJP866</a>
  apa: Kolb, M., &#38; Liesenfeld, M. (2022). On non-extinction in a Fleming-Viot-type
    particle model with Bessel drift. <i>Electronic Journal of Probability</i>, <i>27</i>,
    1–28. <a href="https://doi.org/10.1214/22-EJP866">https://doi.org/10.1214/22-EJP866</a>
  bibtex: '@article{Kolb_Liesenfeld_2022, title={On non-extinction in a Fleming-Viot-type
    particle model with Bessel drift}, DOI={<a href="https://doi.org/10.1214/22-EJP866">https://doi.org/10.1214/22-EJP866</a>},
    number={27}, journal={Electronic Journal of Probability}, publisher={Institute
    of Mathematical Statistics}, author={Kolb, Martin and Liesenfeld, Matthias}, year={2022},
    pages={1–28} }'
  chicago: 'Kolb, Martin, and Matthias Liesenfeld. “On Non-Extinction in a Fleming-Viot-Type
    Particle Model with Bessel Drift.” <i>Electronic Journal of Probability</i>, no.
    27 (2022): 1–28. <a href="https://doi.org/10.1214/22-EJP866">https://doi.org/10.1214/22-EJP866</a>.'
  ieee: 'M. Kolb and M. Liesenfeld, “On non-extinction in a Fleming-Viot-type particle
    model with Bessel drift,” <i>Electronic Journal of Probability</i>, no. 27, pp.
    1–28, 2022, doi: <a href="https://doi.org/10.1214/22-EJP866">https://doi.org/10.1214/22-EJP866</a>.'
  mla: Kolb, Martin, and Matthias Liesenfeld. “On Non-Extinction in a Fleming-Viot-Type
    Particle Model with Bessel Drift.” <i>Electronic Journal of Probability</i>, no.
    27, Institute of Mathematical Statistics, 2022, pp. 1–28, doi:<a href="https://doi.org/10.1214/22-EJP866">https://doi.org/10.1214/22-EJP866</a>.
  short: M. Kolb, M. Liesenfeld, Electronic Journal of Probability (2022) 1–28.
date_created: 2023-01-10T08:19:25Z
date_updated: 2023-01-10T08:19:38Z
department:
- _id: '96'
doi: https://doi.org/10.1214/22-EJP866
issue: '27'
language:
- iso: eng
page: 1-28
publication: Electronic Journal of Probability
publication_status: published
publisher: Institute of Mathematical Statistics
status: public
title: On non-extinction in a Fleming-Viot-type particle model with Bessel drift
type: journal_article
user_id: '85821'
year: '2022'
...
---
_id: '35650'
abstract:
- lang: eng
  text: "We consider autoregressive sequences Xn = aXn−1 + ξn and\r\nMn = max{aMn−1
    , ξn} with a constant a ∈ (0, 1) and with positive, in-\r\ndependent and identically
    distributed innovations {ξk }. It is known that if\r\nP(ξ1 > x) ∼ d\r\nlog x with
    some d ∈ (0, − log a) then the chains {Xn} and {Mn}\r\nare null recurrent. We
    investigate the tail behaviour of recurrence times in this\r\ncase of logarithmically
    decaying tails. More precisely, we show that the tails\r\nof recurrence times
    are regularly varying of index −1 − d/ log a. We also prove\r\nlimit theorems
    for {Xn} and {Mn} conditioned to stay over a fixed level x0.\r\nFurthermore, we
    study tail asymptotics for recurrence times of {Xn} and {Mn}\r\nin the case when
    these chains are positive recurrent and the tail of log ξ1 is\r\nsubexponential."
author:
- first_name: Denis
  full_name: Denisov, Denis
  last_name: Denisov
- first_name: Günter
  full_name: Hinrichs, Günter
  last_name: Hinrichs
- first_name: Martin
  full_name: Kolb, Martin
  id: '48880'
  last_name: Kolb
- first_name: Vitali
  full_name: Wachtel, Vitali
  last_name: Wachtel
citation:
  ama: Denisov D, Hinrichs G, Kolb M, Wachtel V. Persistence of autoregressive sequences
    with logarithmic tails. <i>Electronic Journal of Probability</i>. 2022;27:1-43.
    doi:<a href="https://doi.org/10.48550/arXiv.2203.14772">https://doi.org/10.48550/arXiv.2203.14772</a>
  apa: Denisov, D., Hinrichs, G., Kolb, M., &#38; Wachtel, V. (2022). Persistence
    of autoregressive sequences with logarithmic tails. <i>Electronic Journal of Probability</i>,
    <i>27</i>, 1–43. <a href="https://doi.org/10.48550/arXiv.2203.14772">https://doi.org/10.48550/arXiv.2203.14772</a>
  bibtex: '@article{Denisov_Hinrichs_Kolb_Wachtel_2022, title={Persistence of autoregressive
    sequences with logarithmic tails}, volume={27}, DOI={<a href="https://doi.org/10.48550/arXiv.2203.14772">https://doi.org/10.48550/arXiv.2203.14772</a>},
    journal={Electronic Journal of Probability}, publisher={Institute of Mathematical
    Statistics}, author={Denisov, Denis and Hinrichs, Günter and Kolb, Martin and
    Wachtel, Vitali}, year={2022}, pages={1–43} }'
  chicago: 'Denisov, Denis, Günter Hinrichs, Martin Kolb, and Vitali Wachtel. “Persistence
    of Autoregressive Sequences with Logarithmic Tails.” <i>Electronic Journal of
    Probability</i> 27 (2022): 1–43. <a href="https://doi.org/10.48550/arXiv.2203.14772">https://doi.org/10.48550/arXiv.2203.14772</a>.'
  ieee: 'D. Denisov, G. Hinrichs, M. Kolb, and V. Wachtel, “Persistence of autoregressive
    sequences with logarithmic tails,” <i>Electronic Journal of Probability</i>, vol.
    27, pp. 1–43, 2022, doi: <a href="https://doi.org/10.48550/arXiv.2203.14772">https://doi.org/10.48550/arXiv.2203.14772</a>.'
  mla: Denisov, Denis, et al. “Persistence of Autoregressive Sequences with Logarithmic
    Tails.” <i>Electronic Journal of Probability</i>, vol. 27, Institute of Mathematical
    Statistics, 2022, pp. 1–43, doi:<a href="https://doi.org/10.48550/arXiv.2203.14772">https://doi.org/10.48550/arXiv.2203.14772</a>.
  short: D. Denisov, G. Hinrichs, M. Kolb, V. Wachtel, Electronic Journal of Probability
    27 (2022) 1–43.
date_created: 2023-01-10T08:28:12Z
date_updated: 2023-01-10T08:29:02Z
department:
- _id: '96'
doi: https://doi.org/10.48550/arXiv.2203.14772
intvolume: '        27'
language:
- iso: eng
page: 1-43
publication: Electronic Journal of Probability
publication_status: published
publisher: Institute of Mathematical Statistics
status: public
title: Persistence of autoregressive sequences with logarithmic tails
type: journal_article
user_id: '85821'
volume: 27
year: '2022'
...
---
_id: '31367'
author:
- first_name: Max
  full_name: Hoffmann, Max
  id: '32202'
  last_name: Hoffmann
  orcid: 0000-0002-6964-7123
- first_name: Rolf
  full_name: Biehler, Rolf
  id: '16274'
  last_name: Biehler
citation:
  ama: 'Hoffmann M, Biehler R. Schnittstellenaufgaben in der Analysis I zur Verknüpfung
    von Schul- und Hochschulmathematik - Aufgabenbeispiele und Ergebnisse einer Evaluationsstudie.
    In: Halverscheid S, Kersten I, Schmidt-Thieme B, eds. <i> Bedarfsgerechte fachmathematische
    Lehramtsausbildung. Analyse, Zielsetzungen und Konzepte unter heterogenen Voraussetzungen
    </i>. Springer Spektrum; 2022:351-368.'
  apa: Hoffmann, M., &#38; Biehler, R. (2022). Schnittstellenaufgaben in der Analysis
    I zur Verknüpfung von Schul- und Hochschulmathematik - Aufgabenbeispiele und Ergebnisse
    einer Evaluationsstudie. In S. Halverscheid, I. Kersten, &#38; B. Schmidt-Thieme
    (Eds.), <i> Bedarfsgerechte fachmathematische Lehramtsausbildung. Analyse, Zielsetzungen
    und Konzepte unter heterogenen Voraussetzungen </i> (pp. 351–368). Springer Spektrum.
  bibtex: '@inproceedings{Hoffmann_Biehler_2022, place={Wiesbaden}, title={Schnittstellenaufgaben
    in der Analysis I zur Verknüpfung von Schul- und Hochschulmathematik - Aufgabenbeispiele
    und Ergebnisse einer Evaluationsstudie.}, booktitle={ Bedarfsgerechte fachmathematische
    Lehramtsausbildung. Analyse, Zielsetzungen und Konzepte unter heterogenen Voraussetzungen
    }, publisher={Springer Spektrum}, author={Hoffmann, Max and Biehler, Rolf}, editor={Halverscheid,
    Stefan and Kersten, Ina and Schmidt-Thieme, Barbara}, year={2022}, pages={351–368}
    }'
  chicago: 'Hoffmann, Max, and Rolf Biehler. “Schnittstellenaufgaben in der Analysis
    I zur Verknüpfung von Schul- und Hochschulmathematik - Aufgabenbeispiele und Ergebnisse
    einer Evaluationsstudie.” In <i> Bedarfsgerechte fachmathematische Lehramtsausbildung.
    Analyse, Zielsetzungen und Konzepte unter heterogenen Voraussetzungen </i>, edited
    by Stefan Halverscheid, Ina Kersten, and Barbara Schmidt-Thieme, 351–68. Wiesbaden:
    Springer Spektrum, 2022.'
  ieee: M. Hoffmann and R. Biehler, “Schnittstellenaufgaben in der Analysis I zur
    Verknüpfung von Schul- und Hochschulmathematik - Aufgabenbeispiele und Ergebnisse
    einer Evaluationsstudie.,” in <i> Bedarfsgerechte fachmathematische Lehramtsausbildung.
    Analyse, Zielsetzungen und Konzepte unter heterogenen Voraussetzungen </i>, 2022,
    pp. 351–368.
  mla: Hoffmann, Max, and Rolf Biehler. “Schnittstellenaufgaben in der Analysis I
    zur Verknüpfung von Schul- und Hochschulmathematik - Aufgabenbeispiele und Ergebnisse
    einer Evaluationsstudie.” <i> Bedarfsgerechte fachmathematische Lehramtsausbildung.
    Analyse, Zielsetzungen und Konzepte unter heterogenen Voraussetzungen </i>, edited
    by Stefan Halverscheid et al., Springer Spektrum, 2022, pp. 351–68.
  short: 'M. Hoffmann, R. Biehler, in: S. Halverscheid, I. Kersten, B. Schmidt-Thieme
    (Eds.),  Bedarfsgerechte fachmathematische Lehramtsausbildung. Analyse, Zielsetzungen
    und Konzepte unter heterogenen Voraussetzungen , Springer Spektrum, Wiesbaden,
    2022, pp. 351–368.'
date_created: 2022-05-22T14:16:52Z
date_updated: 2023-01-11T15:28:21Z
department:
- _id: '97'
editor:
- first_name: Stefan
  full_name: Halverscheid, Stefan
  last_name: Halverscheid
- first_name: Ina
  full_name: Kersten, Ina
  last_name: Kersten
- first_name: Barbara
  full_name: Schmidt-Thieme, Barbara
  last_name: Schmidt-Thieme
language:
- iso: ger
page: 351-368
place: Wiesbaden
publication: ' Bedarfsgerechte fachmathematische Lehramtsausbildung. Analyse, Zielsetzungen
  und Konzepte unter heterogenen Voraussetzungen '
publication_status: published
publisher: Springer Spektrum
quality_controlled: '1'
status: public
title: Schnittstellenaufgaben in der Analysis I zur Verknüpfung von Schul- und Hochschulmathematik
  - Aufgabenbeispiele und Ergebnisse einer Evaluationsstudie.
type: conference
user_id: '32202'
year: '2022'
...
---
_id: '31365'
author:
- first_name: Rolf
  full_name: Biehler, Rolf
  id: '16274'
  last_name: Biehler
- first_name: Max
  full_name: Hoffmann, Max
  id: '32202'
  last_name: Hoffmann
  orcid: 0000-0002-6964-7123
citation:
  ama: 'Biehler R, Hoffmann M. Fachwissen als Grundlage fachdidaktischer Urteilskompetenz
    – Beispiele für die Herstellung konzeptueller Bezüge zwischen fachwissenschaftlicher
    und fachdidaktischer Lehre im gymnasialen Lehramtsstudium. In: Isaev V, Eichler
    A, Loose F, eds. <i> Professionsorientierte Fachwissenschaft. Kohärenzstiftende
    Lerngelegenheiten für das Lehramtsstudium Mathematik</i>. Springer; 2022:49–72.
    doi:<a href="https://doi.org/10.1007/978-3-662-63948-1_4">10.1007/978-3-662-63948-1_4</a>'
  apa: Biehler, R., &#38; Hoffmann, M. (2022). Fachwissen als Grundlage fachdidaktischer
    Urteilskompetenz – Beispiele für die Herstellung konzeptueller Bezüge zwischen
    fachwissenschaftlicher und fachdidaktischer Lehre im gymnasialen Lehramtsstudium.
    In V. Isaev, A. Eichler, &#38; F. Loose (Eds.), <i> Professionsorientierte Fachwissenschaft.
    Kohärenzstiftende Lerngelegenheiten für das Lehramtsstudium Mathematik</i> (pp.
    49–72). Springer. <a href="https://doi.org/10.1007/978-3-662-63948-1_4">https://doi.org/10.1007/978-3-662-63948-1_4</a>
  bibtex: '@inproceedings{Biehler_Hoffmann_2022, place={Berlin, Heidelberg}, title={Fachwissen
    als Grundlage fachdidaktischer Urteilskompetenz – Beispiele für die Herstellung
    konzeptueller Bezüge zwischen fachwissenschaftlicher und fachdidaktischer Lehre
    im gymnasialen Lehramtsstudium}, DOI={<a href="https://doi.org/10.1007/978-3-662-63948-1_4">10.1007/978-3-662-63948-1_4</a>},
    booktitle={ Professionsorientierte Fachwissenschaft. Kohärenzstiftende Lerngelegenheiten
    für das Lehramtsstudium Mathematik}, publisher={Springer}, author={Biehler, Rolf
    and Hoffmann, Max}, editor={Isaev, Viktor and Eichler, Andreas and Loose, Frank},
    year={2022}, pages={49–72} }'
  chicago: 'Biehler, Rolf, and Max Hoffmann. “Fachwissen als Grundlage fachdidaktischer
    Urteilskompetenz – Beispiele für die Herstellung konzeptueller Bezüge zwischen
    fachwissenschaftlicher und fachdidaktischer Lehre im gymnasialen Lehramtsstudium.”
    In <i> Professionsorientierte Fachwissenschaft. Kohärenzstiftende Lerngelegenheiten
    für das Lehramtsstudium Mathematik</i>, edited by Viktor Isaev, Andreas Eichler,
    and Frank Loose, 49–72. Berlin, Heidelberg: Springer, 2022. <a href="https://doi.org/10.1007/978-3-662-63948-1_4">https://doi.org/10.1007/978-3-662-63948-1_4</a>.'
  ieee: 'R. Biehler and M. Hoffmann, “Fachwissen als Grundlage fachdidaktischer Urteilskompetenz
    – Beispiele für die Herstellung konzeptueller Bezüge zwischen fachwissenschaftlicher
    und fachdidaktischer Lehre im gymnasialen Lehramtsstudium,” in <i> Professionsorientierte
    Fachwissenschaft. Kohärenzstiftende Lerngelegenheiten für das Lehramtsstudium
    Mathematik</i>, 2022, pp. 49–72, doi: <a href="https://doi.org/10.1007/978-3-662-63948-1_4">10.1007/978-3-662-63948-1_4</a>.'
  mla: Biehler, Rolf, and Max Hoffmann. “Fachwissen als Grundlage fachdidaktischer
    Urteilskompetenz – Beispiele für die Herstellung konzeptueller Bezüge zwischen
    fachwissenschaftlicher und fachdidaktischer Lehre im gymnasialen Lehramtsstudium.”
    <i> Professionsorientierte Fachwissenschaft. Kohärenzstiftende Lerngelegenheiten
    für das Lehramtsstudium Mathematik</i>, edited by Viktor Isaev et al., Springer,
    2022, pp. 49–72, doi:<a href="https://doi.org/10.1007/978-3-662-63948-1_4">10.1007/978-3-662-63948-1_4</a>.
  short: 'R. Biehler, M. Hoffmann, in: V. Isaev, A. Eichler, F. Loose (Eds.),  Professionsorientierte
    Fachwissenschaft. Kohärenzstiftende Lerngelegenheiten für das Lehramtsstudium
    Mathematik, Springer, Berlin, Heidelberg, 2022, pp. 49–72.'
date_created: 2022-05-22T14:03:58Z
date_updated: 2023-01-11T15:29:09Z
department:
- _id: '97'
doi: 10.1007/978-3-662-63948-1_4
editor:
- first_name: Viktor
  full_name: Isaev, Viktor
  last_name: Isaev
- first_name: Andreas
  full_name: Eichler, Andreas
  last_name: Eichler
- first_name: Frank
  full_name: Loose, Frank
  last_name: Loose
language:
- iso: ger
main_file_link:
- url: https://link.springer.com/chapter/10.1007/978-3-662-63948-1_4
page: ' 49–72'
place: Berlin, Heidelberg
publication: ' Professionsorientierte Fachwissenschaft. Kohärenzstiftende Lerngelegenheiten
  für das Lehramtsstudium Mathematik'
publication_identifier:
  isbn:
  - '9783662639474'
  - '9783662639481'
  issn:
  - 2197-8751
  - 2197-876X
publication_status: published
publisher: Springer
quality_controlled: '1'
status: public
title: Fachwissen als Grundlage fachdidaktischer Urteilskompetenz – Beispiele für
  die Herstellung konzeptueller Bezüge zwischen fachwissenschaftlicher und fachdidaktischer
  Lehre im gymnasialen Lehramtsstudium
type: conference
user_id: '32202'
year: '2022'
...
---
_id: '45373'
author:
- first_name: Jennifer
  full_name: Dröse, Jennifer
  id: '85820'
  last_name: Dröse
- first_name: P.
  full_name: Neugebauer, P.
  last_name: Neugebauer
- first_name: R.
  full_name: Delucchi Danhier, R.
  last_name: Delucchi Danhier
- first_name: B.
  full_name: Mertins, B.
  last_name: Mertins
citation:
  ama: 'Dröse J, Neugebauer P, Delucchi Danhier R, Mertins B. Eye-Tracking Studie
    zu Textaufgaben in Klasse 5: Bemerken und Interpretieren syntaktischer Strukturen.
    In: Kleine P, Graulich N, Kuhn J, Schindler M, eds. <i>Eye-Tracking in der Mathematik-
    und Naturwissenschaftsdidaktik. Forschung und Praxis</i>. ; 2022:209-225. doi:<a
    href="https://doi.org/10.1007/978-3-662-63214-7">https://doi.org/10.1007/978-3-662-63214-7</a>'
  apa: 'Dröse, J., Neugebauer, P., Delucchi Danhier, R., &#38; Mertins, B. (2022).
    Eye-Tracking Studie zu Textaufgaben in Klasse 5: Bemerken und Interpretieren syntaktischer
    Strukturen. In P. Kleine, N. Graulich, J. Kuhn, &#38; M. Schindler (Eds.), <i>Eye-Tracking
    in der Mathematik- und Naturwissenschaftsdidaktik. Forschung und Praxis</i> (pp.
    209–225). <a href="https://doi.org/10.1007/978-3-662-63214-7">https://doi.org/10.1007/978-3-662-63214-7</a>'
  bibtex: '@inbook{Dröse_Neugebauer_Delucchi Danhier_Mertins_2022, title={Eye-Tracking
    Studie zu Textaufgaben in Klasse 5: Bemerken und Interpretieren syntaktischer
    Strukturen}, DOI={<a href="https://doi.org/10.1007/978-3-662-63214-7">https://doi.org/10.1007/978-3-662-63214-7</a>},
    booktitle={Eye-Tracking in der Mathematik- und Naturwissenschaftsdidaktik. Forschung
    und Praxis}, author={Dröse, Jennifer and Neugebauer, P. and Delucchi Danhier,
    R. and Mertins, B.}, editor={Kleine, P. and Graulich, N. and Kuhn, J. and Schindler,
    M.}, year={2022}, pages={209–225} }'
  chicago: 'Dröse, Jennifer, P. Neugebauer, R. Delucchi Danhier, and B. Mertins. “Eye-Tracking
    Studie zu Textaufgaben in Klasse 5: Bemerken und Interpretieren syntaktischer
    Strukturen.” In <i>Eye-Tracking in der Mathematik- und Naturwissenschaftsdidaktik.
    Forschung und Praxis</i>, edited by P. Kleine, N. Graulich, J. Kuhn, and M. Schindler,
    209–25, 2022. <a href="https://doi.org/10.1007/978-3-662-63214-7">https://doi.org/10.1007/978-3-662-63214-7</a>.'
  ieee: 'J. Dröse, P. Neugebauer, R. Delucchi Danhier, and B. Mertins, “Eye-Tracking
    Studie zu Textaufgaben in Klasse 5: Bemerken und Interpretieren syntaktischer
    Strukturen,” in <i>Eye-Tracking in der Mathematik- und Naturwissenschaftsdidaktik.
    Forschung und Praxis</i>, P. Kleine, N. Graulich, J. Kuhn, and M. Schindler, Eds.
    2022, pp. 209–225.'
  mla: 'Dröse, Jennifer, et al. “Eye-Tracking Studie zu Textaufgaben in Klasse 5:
    Bemerken und Interpretieren syntaktischer Strukturen.” <i>Eye-Tracking in der
    Mathematik- und Naturwissenschaftsdidaktik. Forschung und Praxis</i>, edited by
    P. Kleine et al., 2022, pp. 209–25, doi:<a href="https://doi.org/10.1007/978-3-662-63214-7">https://doi.org/10.1007/978-3-662-63214-7</a>.'
  short: 'J. Dröse, P. Neugebauer, R. Delucchi Danhier, B. Mertins, in: P. Kleine,
    N. Graulich, J. Kuhn, M. Schindler (Eds.), Eye-Tracking in der Mathematik- und
    Naturwissenschaftsdidaktik. Forschung und Praxis, 2022, pp. 209–225.'
date_created: 2023-05-31T06:22:21Z
date_updated: 2023-11-02T08:07:31Z
department:
- _id: '98'
doi: https://doi.org/10.1007/978-3-662-63214-7
editor:
- first_name: P.
  full_name: Kleine, P.
  last_name: Kleine
- first_name: N.
  full_name: Graulich, N.
  last_name: Graulich
- first_name: J.
  full_name: Kuhn, J.
  last_name: Kuhn
- first_name: M.
  full_name: Schindler, M.
  last_name: Schindler
language:
- iso: ger
page: 209-225
publication: Eye-Tracking in der Mathematik- und Naturwissenschaftsdidaktik. Forschung
  und Praxis
quality_controlled: '1'
status: public
title: 'Eye-Tracking Studie zu Textaufgaben in Klasse 5: Bemerken und Interpretieren
  syntaktischer Strukturen'
type: book_chapter
user_id: '85820'
year: '2022'
...
