Ober-Blöbaum, Sina, and Sebastian Peitz. “Explicit Multiobjective Model Predictive Control for Nonlinear Systems  with Symmetries.”https://doi.org/10.1002/rnc.5281__International Journal of Robust and Nonlinear Control 31(2) (2021): 380–403.https://doi.org/10.1002/rnc.5281 .

Djema, Walid, Laetitia Giraldi, Sofya Maslovskaya, and Olivier Bernard. “Turnpike Features in Optimal Selection of Species Represented by Quota Models.”https://doi.org/10.1016/j.automatica.2021.109804__Automatica 132 (2021).https://doi.org/10.1016/j.automatica.2021.109804 .

Schütte, Philipp, Tobias Weich, and Benjamin Delarue. “Resonances and Weighted Zeta Functions for Obstacle Scattering via Smooth Models,” 2021.

Hoffmann, Max. “Rezension: Hendrik Kasten und Denis Vogel: Grundlagen der ebenen Geometrie – Eine zugängliche aber exakte Einführung in die ebene Geometrie.”https://doi.org/10.1007/s00591-021-00299-3__Mathematische Semesterberichte, 2021.https://doi.org/10.1007/s00591-021-00299-3 .

Hoffmann, Max. “Einsatz von Schnittstellenaufgaben in Mathematikveranstaltungen – Praxisbeispiele aus der Universität Paderborn.”https://doi.org/10.1007/978-3-662-62854-6_9__In https://doi.org/10.1007/978-3-662-62854-6_9__Lehrinnovationen in der Hochschulmathematik.  praxisrelevant – didaktisch fundiert – forschungsbasiert, edited by Rolf Biehler, Andreas Eichler, Reinhard Hochmuth, Stefanie Rach, and Niclas Schaper, 179–204. Berlin, Heidelberg: Springer Berlin Heidelberg, 2021.https://doi.org/10.1007/978-3-662-62854-6_9 .

Küster, Benjamin, and Tobias Weich. “Quantum-Classical Correspondence on Associated Vector Bundles Over Locally Symmetric Spaces.”https://doi.org/10.1093/imrn/rnz068__International Mathematics Research Notices 2021, no. 11 (2021): 8225–96.https://doi.org/10.1093/imrn/rnz068 .

Häsel-Weide, Uta, and Marcus Nührenbürger. “Inklusive Praktiken im Mathematikunterricht. Empirische Analysen von Unterrichtsdiskursen in Einführungsphasen.” Zeitschrift für Grundschulforschung (ZfG), no. 14 (2021): 49–65.

Häsel-Weide, Uta, and Christian Schöttler. “Das Dezimalsystem verstehen – Bedeutung, Erkenntnisse, Anregungen.” Zeitschrift für Mathematikdidaktik in Forschung &; Praxis (ZMFP), no. 2 (2021).

Li, Jiaao, Yulai Ma, Yongtang Shi, Weifan Wang, and Yezhou Wu. “On 3-Flow-Critical Graphs.”https://doi.org/10.1016/j.ejc.2021.103451__European Journal of Combinatorics 100 (2021).https://doi.org/10.1016/j.ejc.2021.103451 .

Kolb, Martin, Tobias Weich, and Lasse Wolf. “Spectral Asymptotics for Kinetic Brownian Motion on Surfaces of Constant Curvature.” Annales Henri Poincaré  23, no. 4 (2021): 1283–96.

Weich, Tobias, and Julia Budde. “Wave Front Sets of Nilpotent Lie Group Representations.” ArXiv:2103.02968, 2021.

Richthammer, Thomas, and Michael Fiedler. “A Lower Bound on the Displacement of Particles in 2D Gibbsian Particle Systems.”https://doi.org/10.1016/j.spa.2020.10.003__Stochastic Processes and Their Applications 132 (2021): 1–32.https://doi.org/10.1016/j.spa.2020.10.003 .

Hanusch, Maximilian. “Symmetries of Analytic Curves.”https://doi.org/10.1016/j.difgeo.2020.101687__Differential Geometry and Its Applications 74 (2021).https://doi.org/10.1016/j.difgeo.2020.101687 .

Frischemeier, Daniel, Susanne Podworny, and Rolf Biehler. “Integration fachwissenschaftlicher und fachdidaktischer Komponenten in der Lehramtsausbildung Mathematik Grundschule am Beispiel einer Veranstaltung zur Leitidee eDaten, Häufigkeit und Wahrscheinlichkeit“.”https://doi.org/10.1007/978-3-662-62854-6_11__In Konzepte und Studien Lehrinnovationen in der Hochschulmathematik . Konzepte und Studien zur Hochschuldidaktik und Lehrerbildung Mathematikzur Hochschuldidaktik und Lehrerbildung Mathematik, edited by Rolf Biehler, Andreas Eichler, Reinhard Hochmuth, Stefanie Rach, and Niclas Schaper, 227349. Berlin, Heidelberg: Springer Spektrum, 2021.https://doi.org/10.1007/978-3-662-62854-6_11 .

Rach, Stefanie, and Michael Liebendörfer. “Die Bedeutung Affektiver Merkmale Beim Mathematiklernen.” In Beiträge Zum Mathematikunterricht 2021 Vom GDM-Monat 2021 Der Gesellschaft Für Didaktik Der Mathematik (GDM) (1.-25. März 2021), edited by Kerstin Hein, Cathleen Heil, Silke Ruwisch, and Susanne Prediger, 247–248. Beiträge Zum Mathematikunterricht. Münster: WTM-Verlag für wissenschaftliche Texte und Medien, 2021.

Büchele, Stefan, Michael Liebendörfer, and Elisa Lankeit. “Increasing the Effect of a Remedial Mathematics Course by Switching to an Online Format during the COVID-19 Crisis: Evidence from a German University.”https://doi.org/10.1093/teamat/hrab013__Teaching Mathematics and Its Applications: An International Journal of the IMA 40, no. 4 (2021): 478–96.https://doi.org/10.1093/teamat/hrab013 .

Gildehaus, Lara, Robin Göller, and Michael Liebendörfer. “Gymnasiales Lehramt Mathematik Studieren – Eine Übersicht Zur Studienorganisation in Deutschland.” Mitteilungen Der Gesellschaft Für Didaktik Der Mathematik 47, no. 111 (2021): 27–32.

Vajen, Bastian, Lara Gildehaus, Michael Liebendörfer, and Christoph Wolf. “Mathematisierung Als Herausforderung Für Die Politische Bildung.” In Schriftenreihe Der DVPB. Standortbestimmung Politische Bildung: Gesellschaftspolitische Herausforderungen, Zivilgesellschaft Und Das Vermeintliche Neutralitätsgebot, edited by Steve Kenner and T. Oeftering, 188–200. Frankfurt: Wochenschau, 2021.

Göller, Robin, Lara Gildehaus, Michael Liebendörfer, and Jörn Steuding. “Prüfungsformate Als Ansatzpunkt Gendersensibler Universitärer Lehre Im Fach Mathematik.” In Mathematik Und Gender: Berichte Und Beiträge Des Arbeitskreise Frauen Und Mathematik, edited by Andrea Blunck and Renate Motzer, 5:59–76. Franzbecker, 2021.

Haak, Inka, Lara Gildehaus, and Michael Liebendörfer. “Genese Und Funktionen von Lerngruppen in Der Studieneingangsphase.” In Naturwissenschaftlicher Unterricht Und Lehrerbildung Im Umbruch?, 89–92. Universität Duisburg-Essen, 2021.

Kempen, Leander, and Michael Liebendörfer. “University Students’ Fully Digital Study of Mathematics: An Identification of Student-Groups via Their Resources Usage and a Characterization by Personal and Affective Characteristics.”https://doi.org/10.1093/teamat/hrab020__Teaching Mathematics and Its Applications: An International Journal of the IMA 40, no. 4 (2021): 436–54.https://doi.org/10.1093/teamat/hrab020 .

Liebendörfer, Michael, Reinhard Hochmuth, Jana Rode, and Stanislaw Schukajlow. “The Mathematical Beliefs and Interest Development of Pre-Service Primary Teachers.” In Interim Proceedings of the 44th Conference of the International Group for the Psychology of Mathematics Education, edited by M. Inprasitha, N. Changsri, and N. Boonsena, 3:198–205. Khon Kaen (Thailand): PME, 2021.

Krapf, Regula, and Michael Liebendörfer. “Was Bewirkt Die Pflichtabgabe von Übungsaufgaben in Der Hochschulmathematik? – Ein Empirischer Vergleich.” Mathematica Didactica 2, no. 44 (2021): 1–17.

Winkler, Michael. “Global Weak Solutions in a Three-Dimensional Keller-Segel-Navier-Stokes System with Gradient-Dependent Flux Limitation.” Nonlinear Analysis: Real World Applications 59 (2021).

Winkler, Michael. “Suppressing Blow-up by Gradient-Dependent Flux Limitation in a Planar Keller-Segel-Navier-Stokes System.” Zeitschrift Für Angewandte Mathematik Und Physik 72 (2021).

Winkler, Michael. “Can Rotational Fluxes Impede the Tendency toward Spatial Homogeneity in Nutrient Taxis (-Stokes) Systems?” International Mathematics Research Notices 2021 (2021): 8106–52.

Winkler, Michael. “Boundedness in a Three-Dimensional Keller-Segel-Stokes System with Subcritical Sensitivity.” Applied Mathematics Letters 112 (2021): 106785.

Winkler, Michael. “Does Spatial Homogeneity Ultimately Prevail in Nutrient Taxis Systems? A Paradigm for Structure Support by Rapid Diffusion Decay in an Autonomous Parabolic Flow.” Transactions of the American Mathematical Society 374 (2021): 219–68.

Rösler, Margit, and Michael Voit. “Positive Intertwiners for Bessel Functions of Type B.”https://doi.org/10.1090/proc/15312__Proceedings of the American Mathematical Society 149, no. 3 (2021): 1151–63.https://doi.org/10.1090/proc/15312 .

Tao, Youshan, and Michael Winkler. “A Fully Cross-Diffusive Two-Component Evolution System: Existence and Qualitative Analysis via Entropy-Consistent Thin-Film-Type Approximation.” Journal of Functional Analysis 281 (2021).

Tao, Youshan, and Michael Winkler. “The Dampening Role of Large Repulsive Convection in a Chemotaxis System Modeling Tumor Angiogenesis.” Nonlinear Analysis, Theory, Methods and Applications 208 (2021).

Wang, Yulan, Michael Winkler, and Zhaoyin Xiang. “Immediate Regularization of Measure-Type Population Densities in a Two-Dimensional Chemotaxis System with Signal Consumption.” Science China Mathematics 64 (2021): 725–46.

Ding, Mengyao, and Michael Winkler. “Small-Density Solutiions in Keller-Segel Systems Involving Rapidly Decaying Diffusivities.” Nonlinear Differential Equatiions and Applicatiions 28 (2021).

Tao, Youshan, and Michael Winkler. “Global Smooth Solutions in a Two-Dimensional Cross-Diffusion System Modeling Propagation of Urban Crime.” Communications in Mathematical Sciences 19 (2021): 829–49.

Tao, Youshan, and Michael Winkler. “Taxis-Driven Formation of Singular Hotspots in a May-Nowak Type Model for Virus Infection.” SIAM Journal on Mathematical Analysis 53 (2021): 1411–33.

Wang, Yulan, Michael Winkler, and Zhaoyin Xiang. “Local Energy Estimates and Global Solvability in a  Threee-Dimensional Chemotaxis-Fluid System with Prescribed Signal on the Boundary.” Communications in Partial Differential Equations 46 (2021): 1058–91.

Wang, Yulan, Michael Winkler, and Zhaoyin Xiang. “Global Solvability in a Threee-Dimensional Keller-Segel.Stokes System Involving Arbitrary Superlinear Logistic Degradation.” Advances in Nonlinear Analysis 10 (2021): 707–31.

Tao, Youshan, and Michael Winkler. “Critical Mass for Infinite-Time Blow-up in a Haptotaxis System with Nonlinear Zero-Order Interaction.” Discrete and Continuous Dynamical Systems 41, no. A (2021): 439–54.

Klüners, Jürgen, and Toru Komatsu. “Imaginary Multiquadratic Number Fields with Class Group of Exponent $ and $.”https://doi.org/10.1090/mcom/3609__Mathematics of Computation 90, no. 329 (2021): 1483–97.https://doi.org/10.1090/mcom/3609 .

Kirschmer, Markus, Fabien Narbonne, Christophe Ritzenthaler, and Damien Robert. “Spanning the Isogeny Class of a Power of an Elliptic Curve.”https://doi.org/10.1090/mcom/3672__Mathematics of Computation 91, no. 333 (2021): 401–49.https://doi.org/10.1090/mcom/3672 .

Burban, Igor, and R. Abedin. “Algebraic Geometry of Lie Bialgebras Defined by Solutions of the Classical Yang-Baxter Equation.”https://doi.org/10.1007/s00220-021-04188-7__Communications in Mathematical Physics 387, no. 2 (2021): 1051–1109.https://doi.org/10.1007/s00220-021-04188-7 .

Bruns, Julia, Hedwig Gasteiger, and Carolin Strahl. “Conceptualising and Measuring Domain-Specific Content Knowledge of Early Childhood Educators: A Systematic Review.”https://doi.org/10.1002/rev3.3255__Review of Education 9, no. 2 (2021): 500–538.https://doi.org/10.1002/rev3.3255 .

Bruns, Julia, and T. Schopferer. “Eine mustergültige Wissenschaft.” . . TPS – Theorie und Praxis der Sozialpädagogik 11 (2021): 28–32.

Jensen, Solveig, Hedwig Gasteiger, and Julia Bruns. “Place Value and Regrouping as Seperate Constructs of Place Value Understanding.” In Proceedings of the 44th Conference of the International Group for the Psychology of Mathematics Education, edited by Maitree Inprasitha, Narumon Changsri, and Nisakorn Boonsena, 3:101–9, 2021.

Bruns, Julia, Hedwig Gasteiger, and Carolin Strahl. “Context and Implications Document for: Conceptualising and Measuring Domain-Specific Content Knowledge of Early Childhood Educators: A Systematic Review.”https://doi.org/10.1002/rev3.3256__Review of Education 9, no. 2 (2021): 539–40.https://doi.org/10.1002/rev3.3256 .

Jensen, Solveig, Hedwig Gasteiger, and Julia Bruns. “Stellenwertverständnis: Verständnis von Stellenwertprinzip und Bündelungsprinzip als separate Konstrukte.”http://dx.doi.org/10.17877/DE290R-22292__In Beiträge zum Mathematikunterricht 2021, edited by Gesellschaft für Didaktik der Mathematik. WTM-Verlag, 2021.http://dx.doi.org/10.17877/DE290R-22292 .

Schönherr, Johanna, S. Schukajlow, J. Blomberg, and C. Leopold. “The Role of Strategy-Based Motivation in Mathematical Problem Solving: The Case of Learner-Generated Drawings.”https://doi.org/10.1016/j.learninstruc.2021.101561__Learning and Instruction 80 (2021).https://doi.org/10.1016/j.learninstruc.2021.101561 .

Black, Tobias, Mario Fuest, and Johannes Lankeit. “Relaxed Parameter Conditions for Chemotactic Collapse in Logistic-Type Parabolic–Elliptic Keller–Segel Systems.”https://doi.org/10.1007/s00033-021-01524-8__Zeitschrift Für Angewandte Mathematik Und Physik 72, no. 3 (2021).https://doi.org/10.1007/s00033-021-01524-8 .

Black, Tobias, and Chunyan Wu. “Prescribed Signal Concentration on the Boundary: Weak Solvability in a Chemotaxis-Stokes System with Proliferation.”https://doi.org/10.1007/s00033-021-01565-z__Zeitschrift Für Angewandte Mathematik Und Physik 72, no. 4 (2021).https://doi.org/10.1007/s00033-021-01565-z .

Dröse, Jennifer, S. Prediger, P. Neugebauer, R. D. Danhier, and B. Mertins. “Investigating Students’ Processes of Noticing and Interpreting Syntactic Language Features in Word Problem Solving through Eye-Tracking.”https://doi.org/doi.org/10.29333/iejme/9674n __International Electronic Journal of Mathematics Education, 16(1), Em0625, 2021.https://doi.org/doi.org/10.29333/iejme/9674n  .