2019
DOI: 10.4007/annals.2019.189.3.6
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Explicit Chabauty–Kim for the split Cartan modular curve of level 13

Abstract: We extend the explicit quadratic Chabauty methods developed in previous work by the first two authors to the case of non-hyperelliptic curves. This results in an algorithm to compute the rational points on a curve of genus g ≥ 2 over the rationals whose Jacobian has Mordell-Weil rank g and Picard number greater than one, and which satisfies some additional conditions. This algorithm is then applied to the modular curve Xs(13), completing the classification of non-CM elliptic curves over Q with split Cartan lev… Show more

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Cited by 70 publications
(128 citation statements)
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“…For N ∈ {67, 73}, it then remains to determine the rational points on X 0 (N ) + , which is hyperelliptic of genus 2 and rank 2 in both cases. These curves X 0 (67) + and X 0 (73) + turn out to be beautiful test cases for the explicit quadratic Chabauty method developed by Balakrishnan and Dogra [2] and Balakrishnan, Dogra, Müller, Tuitman and Vonk [3] following Kim's work [20], [21] on nonabelian Chabauty. The author understands that Balakrishnan, Best, Bianchi, Müller, Triantafillou and Vonk are working on applying quadratic Chabauty to these and more curves, and a proof for X 0 (67) + and X 0 (73) + by (a subset of) these authors is expected to appear in the near future.…”
Section: Introductionmentioning
confidence: 93%
“…For N ∈ {67, 73}, it then remains to determine the rational points on X 0 (N ) + , which is hyperelliptic of genus 2 and rank 2 in both cases. These curves X 0 (67) + and X 0 (73) + turn out to be beautiful test cases for the explicit quadratic Chabauty method developed by Balakrishnan and Dogra [2] and Balakrishnan, Dogra, Müller, Tuitman and Vonk [3] following Kim's work [20], [21] on nonabelian Chabauty. The author understands that Balakrishnan, Best, Bianchi, Müller, Triantafillou and Vonk are working on applying quadratic Chabauty to these and more curves, and a proof for X 0 (67) + and X 0 (73) + by (a subset of) these authors is expected to appear in the near future.…”
Section: Introductionmentioning
confidence: 93%
“…(B) For the following exceptional types there are only a finite number of Q-isomorphic classes: ⋆ 3Ns and G p is 5B. Moreover, we give unconditionally the moduli space for each of the possible exceptional types (see Tables 1,2,3,6,7,9,11,12), except for the cases of level 13, 17 and 37 which are conditionally under Conjecture 3 and the Strong Uniformity Conjecture. Corollary 18.…”
Section: Theorem 17 (A) the Following Nontrivial Exceptional Types Omentioning
confidence: 99%
“…⋆ [8X5,3Nn]: Let E be the modular curve associated to [8X5,3Nn]. In this case, E/Q is the elliptic curve with Cremona label 576a3 and has j-map equal to j(x) = 8x 3 where (x, y) ∈ E(Q). Now let 8X17 be the group…”
Section: Proof Of the Theorem 17 Theorem 19 Corollary 18 And Coromentioning
confidence: 99%
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