The Hochschild cohomology ring of a Frobenius algebra with semisimple Nakayama automorphism is a Batalin-Vilkovisky algebra

  • Thierry Lambre
  • , Guodong Zhou*
  • , Alexander Zimmermann
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

In analogy with a recent result of N. Kowalzig and U. Krähmer for twisted Calabi-Yau algebras, we show that the Hochschild cohomology ring of a Frobenius algebra with semisimple Nakayama automorphism is a Batalin-Vilkovisky algebra, thus generalizing a result of T. Tradler for finite dimensional symmetric algebras. We give a criterion to determine when a Frobenius algebra given by quiver with relations has semisimple Nakayama automorphism and apply it to some known classes of tame Frobenius algebras. We also provide ample examples including quantum complete intersections, finite dimensional Hopf algebras defined over an algebraically closed field of characteristic zero and the Koszul duals of Koszul Artin-Schelter regular algebras of dimension three.

Original languageEnglish
Pages (from-to)103-131
Number of pages29
JournalJournal of Algebra
Volume446
DOIs
StatePublished - 15 Jan 2016

Keywords

  • Batalin-Vilkovisky algebra
  • Differential calculus with duality
  • Frobenius algebra
  • Hochschild cohomology
  • Semisimple nakayama automorphism

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