Geodesic
Cohomology operations and the Deligne conjecture
Czechoslovak Mathematical Journal, Tome 57 (2007) no. 1, pp. 473-503.

Voir la notice de l'article provenant de la source Czech Digital Mathematics Library

The aim of this note, which raises more questions than it answers, is to study natural operations acting on the cohomology of various types of algebras. It contains a lot of very surprising partial results and examples.
Classification : 18D50, 55P48, 55S25
Keywords: cohomology; natural operation 
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     title = {Cohomology operations and the {Deligne} conjecture},
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     pages = {473--503},
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Markl, M. Cohomology operations and the Deligne conjecture. Czechoslovak Mathematical Journal, Tome 57 (2007) no. 1, pp. 473-503. http://geodesic.mathdoc.fr/item/CMJ_2007__57_1_a35/