A reductive monoid is an algebraic monoid with a reductive unit group. Generally, we have the question of finding the orbits of the unit group of a reductive monoid acting on both sides of the monoid. Putcha and Renner give a recipe to determine the orbits for -irreducible monoids according to the D
The Lattice of J-Classes of (J, σ)-Irreducible Monoids
✍ Scribed by Zhuo Li; Lex E Renner
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 407 KB
- Volume
- 190
- Category
- Article
- ISSN
- 0021-8693
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✦ Synopsis
In this paper, we introduce a new concept, namely, the J J, -irreducible monoid. Let G be a simple algebraic group. Let be a surjective endomorphism of G 0 0
Ž . such that G , the fixed points of G under , is finite. We construct a 0 0 Ž . J J, -irreducible monoid M with G the unit group. Extending to M, we obtain a finite monoid M which is J J-irreducible. If M is J J-irreducible, we give a precise recipe to determine the lattices of J J-classes of M and M . ᮊ 1997 Academic Press ␣ ␣ ␣ 1 2 l * Partially supported by R. M. Kane's grant from NSERC. 172
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