Cell 2-representations of finitary 2-categories

Volodymyr Mazorchuk, Vanessa Miemietz

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)


We study 2-representations of finitary 2-categories with involution and adjunctions by functors on module categories over finite-dimensional algebras. In particular, we define, construct and describe in detail (right) cell 2-representations inspired by Kazhdan–Lusztig cell modules for Hecke algebras. Under some natural assumptions we show that cell 2-representations are strongly simple and do not depend on the choice of a right cell inside a two-sided cell. This reproves and extends the uniqueness result on categorification of Kazhdan–Lusztig cell modules for Hecke algebras of type A from [V. Mazorchuk and C. Stroppel, Categorification of (induced) cell modules and the rough structure of generalised Verma modules, Adv. Math. 219 (2008), 1363–1426].
Original languageEnglish
Pages (from-to)1519-1545
Number of pages27
JournalCompositio Mathematica
Issue number05
Publication statusPublished - Sep 2011

Cite this