We develop a new approach to Commutator theory based on the theory of internal categorical structures, especially of so called pseudogroupoids. It is motivated by our previous work on internal categories and groupoids in congruence modular varieties.
Theory and Applications of Categories, Vol. 8, 2001, No. 15, pp 408-456 http://www.tac.mta.ca/tac/volumes/8/n15/n15.dvi http://www.tac.mta.ca/tac/volumes/8/n15/n15.ps http://www.tac.mta.ca/tac/volumes/8/n15/n15.pdf ftp://ftp.tac.mta.ca/pub/tac/html/volumes/8/n15/n15.dvi ftp://ftp.tac.mta.ca/pub/tac/html/volumes/8/n15/n15.psTAC Home