Dynamical twists in group algebras

Details Dynamical twists in group algebras Dynamical twists in group algebras

2001-01-05

arxiv.org/abs/math/0101046v2

Int. Math. Res. Notices (2001) no. 13, 679-701

Mathematics

Quantum Algebra

17 pages, amslatex; sign error in Example 6.10 corrected

Scientific paper

We classify dynamical twists in group algebras of finite groups. Namely, we set up a bijective correspondence between gauge equivalence classes of dynamical twists (which are solutions of a certain non-linear functional equation) and isomorphism classes of ``dynamical data'' described in purely group theoretical terms. This generalizes the classification of usual twists obtained by Movshev and Etingof-Gelaki.

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