Refined index obstructions for Brauer classes on abelian varieties are shown to be stricter than prior versions and produce additional counterexamples to the integral Hodge conjecture.
[HP24] James Hotchkiss and Alexander Perry,The period-index conjecture for abelian threefolds and donaldson-thomas theory, 2024
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Refined index obstructions for Brauer classes on an abelian variety
Refined index obstructions for Brauer classes on abelian varieties are shown to be stricter than prior versions and produce additional counterexamples to the integral Hodge conjecture.