Completely regular semigroup varieties: applications and advanced techniques
Auteur :
Petrich, Mario / Reilly, Norman R.
Éditeur :
Springer International Publishing AG
ISBN :
9783031488245
Date de publication :
5 févr. 2025
Dimensions :
24,0 x 16,8 cm
Langue :
Anglais
Pays d'origine :
Suisse
The mapping that takes each variety to its intersection with the variety of bands is a complete retraction of the lattice of varieties of completely regular semigroups onto the lattice of band varieties and so induces a complete congruence for which every class has a greatest member.