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arXiv · 1403.3770

The prime divisors of the period and index of a Brauer class

Benjamin Antieau·Ben Williams
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Abstract

We show that in locally-ringed connected topoi the primes dividing the period and index of a Brauer class coincide. The result applies in particular to Brauer classes on connected schemes, algebraic stacks, topological spaces and to the projective representation theory of profinite groups.

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Benjamin Antieau, Ben Williams. 2014-03-15. The prime divisors of the period and index of a Brauer class. https://arxiv.org/abs/1403.3770

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