Groupoid cohomology and extensions

Details Groupoid cohomology and extensions Groupoid cohomology and extensions

2004-04-14

arxiv.org/abs/math/0404257v1

Mathematics

Operator Algebras

32 pages

Scientific paper

We show that Haefliger's cohomology for etale groupoids, Moore's cohomology
for locally compact groups and the Brauer group of a locally compact groupoid
are all particular cases of sheaf (or Cech) cohomology for topological
simplicial spaces.

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