The Distance Function in Commutative l-semigroups and the Equivalence in Lukasiewicz Logic.

Andrzej Wronski The Distance Function in Commutative l-semigroups and the Equivalence in Lukasiewicz Logic. 241-253 2004 77 Studia Logica 2 http://dx.doi.org/10.1023/B:STUD.0000037128.76996.90 db/journals/sLogica/sLogica77.html#Wronski04