Hochschild cohomology and derived Picard groups

Details Hochschild cohomology and derived Picard groups Hochschild cohomology and derived Picard groups

2003-10-15

arxiv.org/abs/math/0310221v1

Mathematics

K-Theory and Homology

15 pages, accepted for publication in JPAA

Scientific paper

We interpret Hochschild cohomology as the Lie algebra of the derived Picard
group (in the sense of Rouquier-Zimmermann and Yekutieli) and deduce that it is
preserved under derived equivalences.

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