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2 produkter

  1. Yorck Sommerhäuser - Yetter-Drinfel'd Hopf Algebras over Groups of Prime Order, Häftad. Tillgänglighet: Lägg i varukorg

    Yetter-Drinfel'd Hopf Algebras over Groups of Prime Order

    Av Yorck Sommerhäuser

    Häftad, 2002

    333 kr

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    Being the first monograph devoted to this subject, the book addresses the classification problem for semisimple Hopf algebras, a field that has attracted considerable attention in the last years. The special approach to this problem taken here is via semidirect product decompositions into …

  2. Simon Lentner, Svea Nora Mierach, Christoph Schweigert, Yorck Sommerhäuser - Hochschild Cohomology, Modular Tensor Categories, and Mapping Class Groups I, Häftad. Tillgänglighet: Lägg i varukorg

    Hochschild Cohomology, Modular Tensor Categories, and Mapping Class Groups I

    Av Simon Lentner, Svea Nora Mierach m. fl.

    Häftad, 2023

    552 kr

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    The book addresses a key question in topological field theory and logarithmic conformal field theory: In the case where the underlying modular category is not semisimple, topological field theory appears to suggest that mapping class groups do not only act on the spaces of chiral conformal blocks, …