English

Complexity for Modules Over the Classical Lie Superalgebra gl(m|n)

Representation Theory 2019-02-20 v1

Abstract

Let g=g0ˉg1ˉ\mathfrak{g}=\mathfrak{g}_{\bar{0}}\oplus \mathfrak{g}_{\bar{1}} be a classical Lie superalgebra and F\mathcal{F} be the category of finite dimensional g\mathfrak{g}-supermodules which are completely reducible over the reductive Lie algebra g0ˉ\mathfrak{g}_{\bar{0}}. In an earlier paper the authors demonstrated that for any module MM in F\mathcal{F} the rate of growth of the minimal projective resolution (i.e., the complexity of MM) is bounded by the dimension of g1ˉ\mathfrak{g}_{\bar{1}}. In this paper we compute the complexity of the simple modules and the Kac modules for the Lie superalgebra gl(mn)\mathfrak{gl}(m|n). In both cases we show that the complexity is related to the atypicality of the block containing the module.

Keywords

Cite

@article{arxiv.1107.2579,
  title  = {Complexity for Modules Over the Classical Lie Superalgebra gl(m|n)},
  author = {Brian D. Boe and Jonathan R. Kujawa and Daniel K. Nakano},
  journal= {arXiv preprint arXiv:1107.2579},
  year   = {2019}
}

Comments

32 pages

R2 v1 2026-06-21T18:36:10.729Z