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 |
|---|---|
| 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 |