In 2000, Figallo and Sanza introduced the n×m−valued Lukasiewicz-Moisil algebras, which are a particular case of Matrix Lukasiewicz algebras, and a nontrivial generalization of n−valued… (More)

Here we initiate an investigation of the equational classes of m– symmetric algebras endowed with two tense operators. These varieties is a generalization of tense algebras. Our main interest is the… (More)

In 2007, tense Łukasiewicz–Moisil algebras were introduced by Diaconescu and Georgescu as an algebraic counterpart of tense n–valued Moisil logic. These algebras constitute a generalization of tense… (More)

Ewald (J Symbolic Logic 51(1):166–179, 1986) considered tense operators G, H , F and P on intuitionistic propositional calculus and constructed an intuitionistic tense logic system called IKt. The… (More)

A method to determine the number of elements of the (11, + I )-valued Calgebra with a finite set of free generators is described . Applying this method for n = 1 and n = 2, we find again the result.s… (More)

The purpose of this article is to investigate the variety of algebras, which we call tense De Morgan algebras, as a natural generalization of tense algebras developed in Burges (1984, Handbook of… (More)