On the lifting of the Dade group

For the group of endo-permutation modules of a finite p-group, there is a surjective reduction homomorphism from a complete discrete valuation ring of characteristic 0 to its residue field of characteristic p. We prove that this reduction map always has a section which is a group homomorphism.


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Nov 19 2018
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 Record created 2018-11-19, last modified 2019-03-17

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