On Chevalley restriction theorem
| dc.creator | Tevelev, Eugene | |
| dc.date | 1999-01-15 | |
| dc.date.accessioned | 2026-07-07T05:27:33Z | |
| dc.date.available | 2026-07-07T05:27:33Z | |
| dc.description | Let $g$ be a complex semisimple Lie algebra with adjoint group $G$. Suppose that $σ$ is an involutive automorphism of $g$. Then $σ$ induces uniquely an involution of $G$ also denoted by $σ$, let $K=G^σ$ be a subgroup of $σ$-fixed points. Consider a direct decomposition $g=k+p$ of $g$ into eigenspaces for $σ$. Then $p$ is a $K$-module. Denote by $a\subset p$ any maximal abelian ad-diagonalizable subalgebra. Consider the ``baby Weyl group'' $W=N_K(a)/Z_K(a)$. Let $ψ: C[p]^K\to C[a]^W$ be a restriction map of algebras of invariants. Then the famous Chevalley restriction theorem states that $ψ$ is an isomorphism. The aim of this paper is prove the following Theorem. The restriction map $ψ: C[p\times p]^K\to C[a\times a]^W$ is surjective. | |
| dc.description | AMSTeX, 7 pages | |
| dc.identifier | https://arxiv.org/abs/math/9901060 | |
| dc.identifier | http://arxiv.org/abs/math/9901060 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/77958 | |
| dc.subject | Algebraic Geometry | |
| dc.subject | Representation Theory | |
| dc.subject | 14L30 (Primary) 53C35 (Secondary) | |
| dc.title | On Chevalley restriction theorem | |
| dc.type | text |