The Karoubi envelope of a semigroup
 
 
Description:  The importance for Semigroup Theory of the Karoubi envelope of a semigroup became apparent in the 1980s with the Delay Theorem. This result fits in a framework that was since the 1960s one of the main driving forces of Semigroup Theory: the connections between semigroups and formal languages. In this talk we review some instances of this framework, highlighting a couple of applications of the Karoubi envelope of a semigroup.

 

Date:  2022-10-19
Start Time:   16:00
Speaker:  Alfredo Costa (CMUC, Univ. Coimbra)
Institution:  CMUC, University of Coimbra
Place:  Sala 2.5, DMUC
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