Good filtrations of symmetric algebras and strong F-regularity of invariant subrings

Mitsuyasu Hashimoto

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In this paper, we prove that a linear action of a reductive group on a polynomial ring with good filtrations over a field of characteristic p > 0 yields a strongly F-regular (in particular, Cohen-Macaulay) invariant subring. The strongly F-regular property of some known examples of invariant subrings, such as the coordinate rings of Schubert varieties in Grassmannians, are recovered. A similar result over a field of characteristic zero is also proved.

Original languageEnglish
Pages (from-to)605-623
Number of pages19
JournalMathematische Zeitschrift
Volume236
Issue number3
DOIs
Publication statusPublished - Mar 2001

ASJC Scopus subject areas

  • Mathematics(all)

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