Ainfinity-structures, Brill-Noether loci and the Fourier-Mukai transform
Abstract
We use Ainfinity-formalism to study variation of cohomology spaces under formal deformations of coherent sheaves on projective varieties. As an application we describe formal neighborhoods of twisted Brill-Noether loci at some points. Another application is a computation of the Fourier-Mukai transform of some natural line bundles on symmetric powers of a curve.
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