The unramified Grothendieck--Serre conjecture

Published 17 Sep 2026 in math.AG | (2609.20015v1)

Abstract: We prove that a generically trivial torsor under a reductive group scheme over an unramified regular local ring is trivial.

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Fei Liu

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Mixed-characteristic Grothendieck–Serre conjecture beyond the unramified cases

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