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Local Lie semigroups and open embeddings into global topological semigroups
- Source :
- Indagationes Mathematicae. 2(1):115-138
- Publication Year :
- 1991
- Publisher :
- Elsevier BV, 1991.
-
Abstract
- The semigroup version of Lie's Third Fundamental Theorem asserts that each strictly positive cone and each finite-dimensional Lie wedge is a tangent wedge of some local semigroup. This paper investigates the question whether this local semigroup can be embedded into a global topological semigroup in such a fashion that the embedding preserves all existing products and its image is open. In the case of a strictly positive cone (in particular a finite-dimensional pointed cone) this question will be answered affirmatively. This result contrasts the situation of open embeddings into global subsemigroups of Lie groups, where counterexamples even in low-dimensional Lie groups occur. In the finite-dimensional case a homotopy-like congruence on the semigroup of conal curves induces a quotient semigroup (called conal path semigroup) which also solves the topological embedding problem.
Details
- ISSN :
- 00193577
- Volume :
- 2
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Indagationes Mathematicae
- Accession number :
- edsair.doi.dedup.....3eeffede6cd1a8f2a0073ead68913de9
- Full Text :
- https://doi.org/10.1016/0019-3577(91)90047-b