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|Type:||Artigo de periódico|
|Title:||Maximal semigroups in semi-simple Lie groups|
|Abstract:||The maximal semigroups with nonempty interior in a semi-simple Lie group with finite center are characterized as compression semigroups of subsets in the ag manifolds of the group. For this purpose a convexity theory, called here B-convexity, based on the open Bruhat cells is developed. It turns out that a semigroup with nonempty interior is maximal if and only if it is the compression semigroup of the interior of a B-convex set.|
semi-simple Lie groups
|Editor:||Amer Mathematical Soc|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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