Reduction and Lifting Problem for Differential Forms on Berkovich Curves

Michael Temkin, Ilya Tyomkin

Research output: Contribution to journalArticlepeer-review

Abstract

Given a complete real-valued field k of residue characteristic zero, we study properties of a differential form ω on a smooth proper k-analytic curve X. In particular, we associate to (X,ω) a natural tropical reduction datum combining tropical data of (X,ω) and algebra-geometric reduction data over the residue field k˜. We show that this datum satisfies natural compatibility condition, and prove a lifting theorem asserting that any compatible tropical reduction datum lifts to an actual pair (X,ω). In particular, we obtain a short proof of the main result of [2].

Original languageEnglish
Article number108208
JournalAdvances in Mathematics
Volume397
DOIs
StatePublished - 5 Mar 2022

Keywords

  • Berkovich spaces
  • Differential forms
  • Stable reduction

ASJC Scopus subject areas

  • Mathematics (all)

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