Twist Automorphisms on Quantum Unipotent Cells and Dual Canonical Bases

Yoshiyuki Kimura, Hironori Oya

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In this paper, we construct twist automorphisms on quantum unipotent cells, which are quantum analogues of the Berenstein-Fomin-Zelevinsky twist automorphisms on unipotent cells. We show that those quantum twist automorphisms preserve the dual canonical bases of quantum unipotent cells. Moreover, we prove that quantum twist automorphisms are described by the syzygy functors for representations of preprojective algebras in the symmetric case. This is the quantum analogue of Geiß-Leclerc-Schröers description, and Geiß-Leclerc-Schröers results are essential in our proof. As a consequence, we show that quantum twist automorphisms are compatible with quantum cluster monomials. The 6-periodicity of specific quantum twist automorphisms is also verified.

Original languageEnglish
Pages (from-to)6772-6847
Number of pages76
JournalInternational Mathematics Research Notices
Issue number9
Publication statusPublished - 2021 May 1

ASJC Scopus subject areas

  • Mathematics(all)


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