• Medientyp: Sonstige Veröffentlichung; E-Artikel
  • Titel: Rational points on hyperelliptic Atkin-Lehner quotients of modular curves and their coverings
  • Beteiligte: Adžaga, Nikola [Verfasser:in]; Chidambaram, Shiva [Verfasser:in]; Keller, Timo [Verfasser:in]; Padurariu, Oana [Verfasser:in]
  • Erschienen: Heidelberg : Springer, 2022
  • Erschienen in: Research in number theory : a SpringerOpen journal 8 (2022), Nr. 4 ; Research in number theory : a SpringerOpen journal
  • Ausgabe: published Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/13731; https://doi.org/10.1007/s40993-022-00388-9
  • ISSN: 2522-0160
  • Schlagwörter: quadratic Chabauty ; descent ; conjecture
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  • Beschreibung: We complete the computation of all Q-rational points on all the 64 maximal Atkin-Lehner quotients X(N) ∗ such that the quotient is hyperelliptic. To achieve this, we use a combination of various methods, namely the classical Chabauty–Coleman, elliptic curve Chabauty, quadratic Chabauty, and the bielliptic quadratic Chabauty method (from a forthcoming preprint of the fourth-named author) combined with the Mordell-Weil sieve. Additionally, for square-free levels N, we classify all Q-rational points as cusps, CM points (including their CM field and j-invariants) and exceptional ones. We further indicate how to use this to compute the Q-rational points on all of their modular coverings.
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