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arXiv · 2210.16265

Automorphisms and twisted forms of quotient singularities; notes on a paper of Bresciani--Vistoli

János Kollár
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Abstract

A recent paper of Bresciani and Vistoli studies fields of moduli using residual gerbes. One of their applications is to twisted forms of quotient singularities. We discuss a direct approach to automorphisms and twisted forms, which also works in many wildly ramified cases.

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János Kollár. 2023-02-25. Automorphisms and twisted forms of quotient singularities; notes on a paper of Bresciani--Vistoli. https://arxiv.org/abs/2210.16265

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