{"abstract":[{"text":"We give asymptotic upper and lower bounds for the number of squarefree d (0 < d ≤ X) such that the equation x² − dy²= −1 is solvable. These estimates, as usual, can equivalently be interpreted in terms of real quadratic fields with a fundamental unit with norm −1 and give strong evidence in the direction of a conjecture due to P. Stevenhagen.","lang":"eng"}],"publisher":"Annals of Mathematics","publication_status":"published","status":"public","department":[{"_id":"102"}],"publication":"Annals of Mathematics","doi":"10.4007/annals.2010.172.2035","date_created":"2022-12-23T09:09:02Z","user_id":"93826","keyword":["Statistics","Probability and Uncertainty","Mathematics (miscellaneous)"],"type":"journal_article","intvolume":"       172","year":"2010","date_updated":"2023-03-06T09:50:37Z","volume":172,"publication_identifier":{"issn":["0003-486X"]},"issue":"3","language":[{"iso":"eng"}],"title":"On the negative Pell equation","citation":{"short":"É. Fouvry, J. Klüners, Annals of Mathematics 172 (2010) 2035–2104.","ama":"Fouvry É, Klüners J. On the negative Pell equation. <i>Annals of Mathematics</i>. 2010;172(3):2035-2104. doi:<a href=\"https://doi.org/10.4007/annals.2010.172.2035\">10.4007/annals.2010.172.2035</a>","apa":"Fouvry, É., &#38; Klüners, J. (2010). On the negative Pell equation. <i>Annals of Mathematics</i>, <i>172</i>(3), 2035–2104. <a href=\"https://doi.org/10.4007/annals.2010.172.2035\">https://doi.org/10.4007/annals.2010.172.2035</a>","mla":"Fouvry, Étienne, and Jürgen Klüners. “On the Negative Pell Equation.” <i>Annals of Mathematics</i>, vol. 172, no. 3, Annals of Mathematics, 2010, pp. 2035–104, doi:<a href=\"https://doi.org/10.4007/annals.2010.172.2035\">10.4007/annals.2010.172.2035</a>.","ieee":"É. Fouvry and J. Klüners, “On the negative Pell equation,” <i>Annals of Mathematics</i>, vol. 172, no. 3, pp. 2035–2104, 2010, doi: <a href=\"https://doi.org/10.4007/annals.2010.172.2035\">10.4007/annals.2010.172.2035</a>.","bibtex":"@article{Fouvry_Klüners_2010, title={On the negative Pell equation}, volume={172}, DOI={<a href=\"https://doi.org/10.4007/annals.2010.172.2035\">10.4007/annals.2010.172.2035</a>}, number={3}, journal={Annals of Mathematics}, publisher={Annals of Mathematics}, author={Fouvry, Étienne and Klüners, Jürgen}, year={2010}, pages={2035–2104} }","chicago":"Fouvry, Étienne, and Jürgen Klüners. “On the Negative Pell Equation.” <i>Annals of Mathematics</i> 172, no. 3 (2010): 2035–2104. <a href=\"https://doi.org/10.4007/annals.2010.172.2035\">https://doi.org/10.4007/annals.2010.172.2035</a>."},"_id":"34886","author":[{"full_name":"Fouvry, Étienne","first_name":"Étienne","last_name":"Fouvry"},{"last_name":"Klüners","first_name":"Jürgen","id":"21202","full_name":"Klüners, Jürgen"}],"page":"2035-2104"}