Para-Hopf algebroids and their cyclic cohomology

نویسنده

  • M. Khalkhali
چکیده

We introduce the concept of para-Hopf algebroid and define their cyclic cohomology in the spirit of Connes-Moscovici cyclic cohomology for Hopf algebras. Para-Hopf algebroids are closely related to, but different from, Hopf algebroids. Their definition is motivated by attempting to define a cyclic cohomology theory for Hopf algebroids in general. We show that many of Hopf algebraic structures, including the Connes-Moscovici algebra HFM , are para-Hopf algebroids. Mathematics Subject Classification (2000). Primary 58B34, 58B32, 46L87, 81R60; Secondary 81R50.

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تاریخ انتشار 2008