English

Tilting modules of affine quasi-hereditary algebras

Representation Theory 2021-12-16 v2 Quantum Algebra Rings and Algebras

Abstract

We discuss tilting modules of affine quasi-hereditary algebras. We present an existence theorem of indecomposable tilting modules when the algebra has a large center and use it to deduce a criterion for an exact functor between two affine highest weight categories to give an equivalence. As an application, we prove that the Arakawa-Suzuki functor [Arakawa-Suzuki, J. of Alg. 209 (1998)] gives a fully faithful embedding of a block of the deformed BGG category of glm\mathfrak{gl}_{m} into the module category of a suitable completion of degenerate affine Hecke algebra of GLnGL_{n}.

Keywords

Cite

@article{arxiv.1610.02621,
  title  = {Tilting modules of affine quasi-hereditary algebras},
  author = {Ryo Fujita},
  journal= {arXiv preprint arXiv:1610.02621},
  year   = {2021}
}

Comments

25 pages, v2: minor modifications