Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4584372 | Journal of Algebra | 2015 | 28 Pages |
Abstract
We consider moduli spaces of Azumaya algebras on K3 surfaces and construct an example. In some cases we show a derived equivalence which corresponds to a derived equivalence between twisted sheaves. We prove if A and A′A′ are Morita equivalent Azumaya algebras of degree r then 2r divides c2(A)−c2(A′)c2(A)−c2(A′). In particular this implies that if A is an Azumaya algebra on a K3 surface and c2(A)c2(A) is within 2r of its minimal bound then the moduli stack of Azumaya algebras with the same underlying gerbe, if non-empty, is a proper algebraic space.
Related Topics
Physical Sciences and Engineering
Mathematics
Algebra and Number Theory
Authors
Colin Ingalls, Madeeha Khalid,