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Congruences for critical values of higher derivatives of twisted Hasse–Weil L-functions, III

Published online by Cambridge University Press:  19 October 2021

WERNER BLEY
Affiliation:
Ludwig–Maximilians-Universität München, Theresienstr. 39, D-80333 München, Germany. e-mail: [email protected]
DANIEL MACIAS CASTILLO
Affiliation:
Departamento de Matemáticas, Universidad Autónoma de Madrid, 28049 Madrid, Spain and Instituto de Ciencias Matemáticas, 28049 Madrid, Spain. e-mail: [email protected]

Abstract

Let A be an abelian variety defined over a number field k, let p be an odd prime number and let $F/k$ be a cyclic extension of p-power degree. Under not-too-stringent hypotheses we give an interpretation of the p-component of the relevant case of the equivariant Tamagawa number conjecture in terms of integral congruence relations involving the evaluation on appropriate points of A of the ${\rm Gal}(F/k)$ -valued height pairing of Mazur and Tate. We then discuss the numerical computation of this pairing, and in particular obtain the first numerical verifications of this conjecture in situations in which the p-completion of the Mordell–Weil group of A over F is not a projective Galois module.

Type
Research Article
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of Cambridge Philosophical Society

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