Timo Keller

activity

20142026

most citedComputing quadratic points on modular curves

X_{0} (N)

7 citations · 11 across the 5 of their papers we have counts for

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Showing 2022Show all

2 papers · 1 filter

math.NT2022

On the $p$ -torsion of the Tate-Shafarevich group of abelian varieties over higher dimensional bases over finite fields

Timo Keller

We prove a finiteness theorem for the first flat cohomology group of finite flat group schemes over integral normal proper varieties over finite fields. As a consequence, we can pr…

math.NT2022

Rational points on hyperelliptic Atkin-Lehner quotients of modular curves and their coverings

Nikola Adžaga, Shiva Chidambaram, Timo Keller +1

We complete the computation of all $Q$ -rational points on all the $64$ maximal Atkin-Lehner quotients $X_{0} (N)^{*}$ such that the quotient is hyperelliptic. To achieve this,…

On the p-torsion of the Tate-Shafarevich group of abelian varieties over higher dimensional bases over finite fields

Rational points on hyperelliptic Atkin-Lehner quotients of modular curves and their coverings

On the $p$ -torsion of the Tate-Shafarevich group of abelian varieties over higher dimensional bases over finite fields