Deformations of Quantum Symmetric Algebras Extended by Groups

Details Deformations of Quantum Symmetric Algebras Extended by Groups Deformations of Quantum Symmetric Algebras Extended by Groups

2012-04-10

arxiv.org/abs/1204.2042v1

Mathematics

Rings and Algebras

Scientific paper

We discuss a general construction of a deformation of a smash product algebra coming from an action of a particular Hopf algebra. This Hopf algebra is generated by skew-primitive and group-like elements, and depends on a complex parameter. The smash product algebra is defined on the quantum symmetric algebra of a finite-dimensional vector space and a group. In particular, an application of this result has enabled us to find a deformation of such a smash product algebra which is, to the best of our knowledge, the first known example of a deformation in which the new relations in the deformed algebra involve elements of the original vector space. Using Hochschild cohomology, we show that the resulting deformations are nontrivial by giving the precise characterization of the infinitesimal.

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