da Costa, Newton C. A.; Kotas, J. On some modal logical systems defined in connexion with Jaśkowski’s problem. (English) Zbl 0359.02011 Non-classical Logics, Model Theory, Comput., Proc. 3rd Lat.-Am. Symp. math. Logic, Campinas 1976, Stud. Logic Found. Math. 89, 57-73 (1977). Reviewer: N. C. A. da Costa MSC: 03B45 03B99 PDFBibTeX XML
Kotas, Jerzy Discussive sentential calculuc of Jaskowski. (English) Zbl 0315.02033 Stud. Log. 34, 149-168 (1975). MSC: 03B99 03B45 PDFBibTeX XMLCite \textit{J. Kotas}, Stud. Log. 34, 149--168 (1975; Zbl 0315.02033) Full Text: DOI
Kotas, Jerzy On quantity of logical values in the discussive \(D_2\) system and in modular logic. (English) Zbl 0317.02032 Stud. Log. 33, 273-275 (1974). MSC: 03B99 03B50 03B45 03G05 06C05 PDFBibTeX XMLCite \textit{J. Kotas}, Stud. Log. 33, 273--275 (1974; Zbl 0317.02032) Full Text: DOI
Kotas, Jerzy The axiomatization of S. Jaskowski’s discussive system. (English) Zbl 0295.02015 Stud. Log. 33, 195-200 (1974). MSC: 03B45 03B99 PDFBibTeX XMLCite \textit{J. Kotas}, Stud. Log. 33, 195--200 (1974; Zbl 0295.02015) Full Text: DOI
Kotas, Jerzy On logical systems with implications and theories of algebras. (English) Zbl 0274.02032 Stud. Log. 31, 49-72 (1973). MSC: 03G15 03G25 03B99 PDFBibTeX XMLCite \textit{J. Kotas}, Stud. Log. 31, 49--72 (1973; Zbl 0274.02032) Full Text: DOI
Kotas, Jerzy About the equivalent theories of algebras with relations. (English) Zbl 0274.02025 Stud. Log. 30, 79-96 (1972). MSC: 03B99 03G25 PDFBibTeX XMLCite \textit{J. Kotas}, Stud. Log. 30, 79--96 (1972; Zbl 0274.02025) Full Text: DOI
Kotas, Jerzy Logical systems with implications. (English) Zbl 0317.02070 Stud. Log. 28, 101-117 (1971). MSC: 03Gxx 03B05 03B45 03B99 PDFBibTeX XMLCite \textit{J. Kotas}, Stud. Log. 28, 101--117 (1971; Zbl 0317.02070) Full Text: DOI
Kotas, Jerzy The modular logic as a calculus of logical schemata. (English) Zbl 0265.02025 Stud. Log. 27, 73-79 (1971). MSC: 03B99 06E05 PDFBibTeX XMLCite \textit{J. Kotas}, Stud. Log. 27, 73--79 (1971; Zbl 0265.02025) Full Text: DOI
Kotas, Jerzy; Pieczkowski, August Allgemeine logische und mathematische Theorien. (German) Zbl 0274.02024 Z. Math. Logik Grundlagen Math. 16, 353-376 (1970). MSC: 03B99 03G25 PDFBibTeX XMLCite \textit{J. Kotas} and \textit{A. Pieczkowski}, Z. Math. Logik Grundlagen Math. 16, 353--376 (1970; Zbl 0274.02024) Full Text: DOI
Kotas, Jerzy An axiom system for the modular logic. (English) Zbl 0333.02023 Stud. Log. 21, 17-38 (1967). MSC: 03B99 06C05 PDFBibTeX XMLCite \textit{J. Kotas}, Stud. Log. 21, 17--38 (1967; Zbl 0333.02023) Full Text: DOI