On the relative minimal model program for fourfolds in positive and mixed characteristic

We show the validity of two special cases of the four-dimensional minimal model program (MMP) in characteristic $p>5$ : for contractions to ${\mathbb {Q}}$ -factorial fourfolds and in families over curves (‘semistable MMP’). We also provide their mixed characteristic analogues. As a c...

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Bibliographic Details
Main Authors: Christopher Hacon, Jakub Witaszek
Format: Article
Language:English
Published: Cambridge University Press 2023-01-01
Series:Forum of Mathematics, Pi
Online Access:https://www.cambridge.org/core/product/identifier/S2050508623000069/type/journal_article