Note on the Hochschild cohomology of Hopf–Galois extension

Acta Mathematica Hungarica（2017）

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摘要

We generalize [4, Theorem 4.3] to the case of Hopf–Galois extension, by introducing the cotensor product of a comodule algebra and its opposite algebra, and then give some applications.

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关键词

16W30,Hopf–Galois extension,cotensor product,Hochschild cohomology

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