Cohomology of exact categories and (non-)additive sheaves

Details Cohomology of exact categories and (non-)additive sheaves Cohomology of exact categories and (non-)additive sheaves

2011-02-28

arxiv.org/abs/1102.5756v2

Mathematics

K-Theory and Homology

27 pages

Scientific paper

We use (non-)additive sheaves to introduce an (absolute) notion of Hochschild
cohomology for exact categories as Ext's in a suitable bisheaf category. We
compare our approach to various definitions present in the literature.

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