A reduction of the primitive symbols of the Lewis calculi
Halldén, S. (1949)
Portugaliae mathematica
Similarity:
Halldén, S. (1949)
Portugaliae mathematica
Similarity:
Fitch, Frederic B. (1948)
Portugaliae mathematica
Similarity:
Andrzej Grzegorczyk (1964)
Fundamenta Mathematicae
Similarity:
P. C. Gilmore (1956-1958)
Compositio Mathematica
Similarity:
Götlind, Erik (1951)
Portugaliae mathematica
Similarity:
E. G. K. López-Escobar, Francisco Miraglia
Similarity:
Evans, Trevor, Hardy, Lane (1957)
Portugaliae mathematica
Similarity:
R. Jeroslow (1971)
Fundamenta Mathematicae
Similarity:
Daniel Leivant (1976)
Annales scientifiques de l'Université de Clermont. Mathématiques
Similarity: