We use geometric invariant theory and the language of quivers to study compactifications of moduli spaces of linear dynamical systems. A general approach to this problem is presented and applied to two well known cases: We show how both Lomadze's and Helmke's compactification arises naturally as a g
Quivers and the Invariant Theory of Levi Subgroups
โ Scribed by H. Aslaksen; E.C. Tan; C.B. Zhu
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 721 KB
- Volume
- 120
- Category
- Article
- ISSN
- 0022-1236
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โฆ Synopsis
We develop a theory of invariants using the formalism of quivers, generalizing earlier results attributed to Procesi. As an application, let (H) be the Levi component of a parabolic subgroup of a classical Lie group (G) with Lie algebra a. We describe a finite set of generators for (\mathscr{P}[\mathfrak{q}]^{H}), the space of (H)-invariant polynomials on (\mathfrak{g}), as well as the (H)-invariants in the universal enveloping algebra, (\mathscr{I}(\mathfrak{g})^{\prime \prime}), thus generalizing the results of Klink and Ton-That, and Zhu. 1994 Academic Press, Inc.
๐ SIMILAR VOLUMES
that if G is a finite group with a subgroup H of finite index n, then the nth power ลฝ . n ลฝ . of the Schur multiplier of G, M G , is isomorphic to a subgroup of M H . In this paper we prove a similar result for the centre by centre by w variety of groups, where w is any outer commutator word. Then u