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Groupoid cohomology and extensions |
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| Authors: | Jean-Louis Tu |
| Institution: | Institut de Mathématiques, Université Pierre et Marie Curie, 175 rue du Chevaleret, 75013 Paris, France |
| Abstract: | We show that Haefliger's cohomology for étale 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. |
| Keywords: | Groupoid sheaf cohomology Haefliger's cohomology Brauer group of a groupoid |
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