brosnan@math.ubc.ca
Submission: 2007, Nov 26
We affirmatively answer a conjecture in the preprint ``Essential dimension and algebraic stacks'' (preprint 238 on LAGRS), proving that the essential dimension of an abelian variety over a number field is infinite.
2000 Mathematics Subject Classification: 14K99, 11F80, 11E72
Keywords and Phrases: Essential dimension, abelian varieties, Frobenius torus
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