Galois theory of the canonical theta structure

Details Galois theory of the canonical theta structure Galois theory of the canonical theta structure

2005-09-05

arxiv.org/abs/math/0509092v4

Mathematics

Number Theory

30 pages

Scientific paper

In this article we give a Galois-theoretic characterization of the canonical theta structure. The Galois property of the canonical theta structure translates into certain $p$-adic theta relations which are satisfied by the canonical theta null point of the canonical lift. As an application we give a purely algebraic proof of some 2-adic theta identities which describe the set of theta null points of the canonical lifts of ordinary abelian varieties in characteristic 2. The latter theta relations are suitable for explicit canonical lifting.

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