The cohomology structure of string algebras

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We show that the graded commutative ring structure of the Hochschild cohomology HH*(A) is trivial in case A is a triangular quadratic string algebra. Moreover, in case A isgentle, the Lie algebra structure on HH*(A) is also trivial.
10 pages. Submited for publication

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K-Theory and Homology, Rings and Algebras, 16E40

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http://salesiana.dossiersoluciones.com/handle/123456789/72758

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0410123
 http://arxiv.org/abs/math/0410123

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arXiv