Kyoto Journal of Mathematics
- Kyoto J. Math.
- Volume 55, Number 4 (2015), 687-772.
Structure of Tate–Shafarevich groups of elliptic curves over global function fields
The structure of the Tate–Shafarevich groups of a class of elliptic curves over global function fields is determined. These are known to be finite abelian groups and hence they are direct sums of finite cyclic groups where the orders of these cyclic components are invariants of the Tate–Shafarevich group. This decomposition of the Tate–Shafarevich groups into direct sums of finite cyclic groups depends on the behaviour of Drinfeld–Heegner points on these elliptic curves. These are points analogous to Heegner points on elliptic curves over the rational numbers.
Kyoto J. Math., Volume 55, Number 4 (2015), 687-772.
Received: 6 December 2012
Revised: 25 June 2014
Accepted: 8 September 2014
First available in Project Euclid: 25 November 2015
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Zentralblatt MATH identifier
Primary: 11G05: Elliptic curves over global fields [See also 14H52] 11G09: Drinfelʹd modules; higher-dimensional motives, etc. [See also 14L05] 11G20: Curves over finite and local fields [See also 14H25] 11G40: $L$-functions of varieties over global fields; Birch-Swinnerton-Dyer conjecture [See also 14G10] 14G10: Zeta-functions and related questions [See also 11G40] (Birch- Swinnerton-Dyer conjecture) 14G17: Positive characteristic ground fields 14G25: Global ground fields 14H52: Elliptic curves [See also 11G05, 11G07, 14Kxx]
Brown, M. L. Structure of Tate–Shafarevich groups of elliptic curves over global function fields. Kyoto J. Math. 55 (2015), no. 4, 687--772. doi:10.1215/21562261-3157730. https://projecteuclid.org/euclid.kjm/1448460077