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most citedNori fundamental gerbe of essentially finite covers and Galois closure of towers of torsors

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math.AG2015

Twisting by a torsor

Michel Emsalem

Twisting by a G-torsor an object endowed with an action of a group G is a classical tool. For instance one finds in the paragraph 5.3 of the book "cohomologie galoisienne" by Serre…