English

Grade zero part of forced graded algebras

Representation Theory 2017-09-18 v1 Quantum Algebra

Abstract

The paper concerns a certain subcategory of the category of representations for a semisimple algebraic group GG in characteristic pp, which arise from the semisimple modules for the corresponding quantum group at a pp-th root of unity. The subcategory, thus, records the cohomological difference between quantum groups and algebraic groups. We define translation functors in this category and use them to obtain information on the irreducible characters for GG when the Lusztig character formula does not hold.

Keywords

Cite

@article{arxiv.1709.04967,
  title  = {Grade zero part of forced graded algebras},
  author = {Hankyung Ko},
  journal= {arXiv preprint arXiv:1709.04967},
  year   = {2017}
}

Comments

accepted for Special Issue on Representation Theory in Sci China Math