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Journal of the London Mathematical Society Advance Access published online on February 20, 2008
Journal of the London Mathematical Society, doi:10.1112/jlms/jdm115
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© 2007 London Mathematical Society

Hochschild cohomology via incidence algebras

María Julia Redondo

Instituto de Matemática
Universidad Nacional del Sur
Av. Alem 1253
(8000) Bahía Blanca, Argentina

Given an algebra A, we associate an incidence algebra A({Sigma}) and compare their Hochschild cohomology groups.

The author is a research member of CONICET (Argentina).

2000 Mathematics Subject Classification 16E40, 16G20.

Received November 23, 2006; revised July 13, 2007;
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