Coverings of Laura Algebras: the Standard Case

نویسندگان

  • Ibrahim Assem
  • Juan Carlos Bustamante
  • Patrick Le Meur
چکیده

In this paper, we study the covering theory of laura algebras. We prove that if a connected laura algebra is standard (that is, has a standard connecting component), then it has Galois coverings associated to the coverings of the connecting component. As a consequence, the first Hochschild cohomology group of a standard laura algebra vanishes if and only if it has no proper Galois coverings.

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تاریخ انتشار 2009