Character expansion of Kac–Moody correction factors
Lee, K.-H., Liu, D and Oliver, T. 2021. Character expansion of Kac–Moody correction factors. Pacific Journal of Mathematics. 313 (1), pp. 159-183. https://doi.org/10.2140/pjm.2021.313.159
Lee, K.-H., Liu, D and Oliver, T. 2021. Character expansion of Kac–Moody correction factors. Pacific Journal of Mathematics. 313 (1), pp. 159-183. https://doi.org/10.2140/pjm.2021.313.159
Title | Character expansion of Kac–Moody correction factors |
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Type | Journal article |
Authors | Lee, K.-H., Liu, D and Oliver, T. |
Abstract | A correction factor naturally arises in the theory of p-adic Kac–Moody groups. We expand the correction factor into a sum of irreducible characters of the underlying Kac–Moody algebra. We derive a formula for the coefficients which lie in the ring of power series with integral coefficients. In the case that the Weyl group is a universal Coxeter group, we show that the coefficients are actually polynomials. |
Keywords | Kac–Moody algebras |
Weyl groups | |
Poincare series | |
Macdonald identity | |
correction factor | |
character expansions | |
Coxeter groups | |
Journal | Pacific Journal of Mathematics |
Journal citation | 313 (1), pp. 159-183 |
ISSN | 1945-5844 |
0030-8730 | |
Year | 2021 |
Publisher | MSP |
Accepted author manuscript | File Access Level Open (open metadata and files) |
Digital Object Identifier (DOI) | https://doi.org/10.2140/pjm.2021.313.159 |
Web address (URL) | https://msp.org/pjm/2021/313-1/pjm-v313-n1-p06-p.pdf |
Publication dates | |
Published | 17 Sep 2021 |