Description of root systems with given Weyl group
โ Scribed by I. I. Kotova
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 1996
- Tongue
- English
- Weight
- 275 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0001-4346
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract Let __X__ be a nonempty subset of a group __G__. We call a subgroup __A__ of __G__ an __X__~__m__~โ__semipermutable__ subgroup of __G__ if __A__ has a minimal supplement __T__ in __G__ such that for every maximal subgroup __M__ of any Hall subgroup __T__~1~ of __T__ there exists an elem
A simple way of as,;ociating a matroid of prescribed rank with a graph is shown. The matroids so corhstrueted are re.presentable over any sufficiently large field. Their ase is demonstrated by the fallowing result: Given an integer k >~ 3 and a hmction G associating a group with each subsel of a set