Authors: Rusu Andrei
Abstract
The necessary and sufficient conditions for a system of formulas to be complete as to expressibility in the 4-valued extension of the provability logic of propositions are shown in the article.Institutul de Matematică Academia de Ştiinţe a Moldovei
str. Academiei 5, Chişinău MD-2028 Moldova
str. Academiei 5, Chişinău MD-2028 Moldova
