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- W2164255608 abstract "Let A∗Γ be a crossed product algebra, where A is semisimple, finitely generated over its center and Γ is a finite group. We give a necessary and sufficient condition in terms of the outer action of Γ on A for the existence of a multi-parametric semisimple deformation of the form A((t1,…,tn))∗Γ (with the induced outer action). The main tool in the proof is the solution of the so-called twisting problem. We also give an example which shows that the condition is not sufficient if one drops the condition on the finite generation of A over its center." @default.
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- W2164255608 date "2007-07-01" @default.
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- W2164255608 title "On deformations of crossed products" @default.
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- W2164255608 doi "https://doi.org/10.1016/j.jpaa.2006.08.015" @default.
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