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U-Concordant Semigroups
- Source :
- Algebra Colloquium. 25:295-318
- Publication Year :
- 2018
- Publisher :
- World Scientific Pub Co Pte Lt, 2018.
-
Abstract
- We introduce the relations [Formula: see text] and [Formula: see text] with respect to a subset U of idempotents. Based on [Formula: see text] and [Formula: see text], we define a new class of semigroups which we name U-concordant semigroups. Our purpose is to describe U-concordant semigroups by generalized categories over a regular biordered set. We show that the category of U-concordant semigroups and admissible morphisms is isomorphic to the category of RBS generalized categories and pseudo functors. Our approach is inspired from Armstrong’s work on the connection between regular biordered sets and concordant semigroups. The significant difference in strategy is by using RBS generalized categories equipped with pre-orders, we have no need to discuss the quotient of a category factored by a congruence.
Details
- ISSN :
- 02191733 and 10053867
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- Algebra Colloquium
- Accession number :
- edsair.doi...........436d8f745810034929315df04bf431cb