Artin Algebras with Loops but no Outer Derivations

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Abstract

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We construct Artin algebras with vanishing first Hochschild Cohomology but a loop in their ordinary quiver. Some authors guessed earlier that such examples could not exist.
12 pages

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Rings and Algebras, Representation Theory, 16E40; 16G60

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http://salesiana.dossiersoluciones.com/handle/123456789/78762

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/9907008
 http://arxiv.org/abs/math/9907008

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arXiv