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- W2963437968 abstract "We study formal deformations of a crossed product S ( V ) # f G , of a polynomial algebra with a group, induced from a universal deformation formula introduced by Witherspoon. These deformations arise from braided actions of Hopf algebras generated by automorphisms and skew derivations. We show that they are non-trivial in the characteristic free context, even if G is infinite, by showing that their infinitesimals are not coboundaries. For this we construct a new complex which computes the Hochschild cohomology of S ( V ) # f G ." @default.
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- W2963437968 date "2011-03-01" @default.
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- W2963437968 title "Universal deformation formulas and braided module algebras" @default.
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- W2963437968 doi "https://doi.org/10.1016/j.jalgebra.2010.12.022" @default.
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