Year: 2014
Type: preprint
Abstract: In 1979, Vogan proposed a generalised $τ$-invariant for characterising primitive ideals in enveloping algebras. Via a known dictionary this translates to an invariant of left cells of finite Weyl groups. Although it is not a complete invariant, it is extremely useful in describing left cells. Here, we propose a general framework for defining such invariants which also applies to Hecke algebras with unequal parameters.
Source: arXiv (Cornell University)
Author: Geck, Meinolf
Institution: University of Stuttgart
Language: English
Subfield: Algebra and Number Theory
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1620410898