Title: Local-global principles for semiabelian
varieties
Abstract: We study
local-global principles for rational points on torsors under
semiabelian varieties, in particular the Hasse principle, weak
approximation and a generalisation of the Cassels-Tate dual exact
sequence. The main tool is the arithmetic duality theorem for 1-motives
we established earlier. This is joint work with David Harari.
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