Events > Algebra Seminars

Derivatives for equational theories

26/10/2012 Sexta-feira, 26 de Outubro de 2012, 14:30, IIIUL - Sala B3-01 
Luís Sequeira (CAUL/FCUL, Portugal)
Institute for Interdisciplinary Research - University of Lisbon

In recent papers by Kearnes&Szendrei and by Freese, several different notions of "derivative" for idempotent equational theories have been defined. Each of those different derivatives is obtained by adding some new identities to the theory. These notions of derivative turn out to be closely related to important Maltsev type conditions like congruence modularity and n-permutability. In this seminar we will introduce these notions and results.