1. About certain groups of classes of sets and their application to the definitions of numbers

   • Stanisław Jaśkowski

   OriginalPaper Pages: 133 - 144

2. On Jaśkowski-type semantics for the intuitionistic propositional logic

   • Stanisław J. Surma
   • Andrzej Wroński
   • Stanisław Zachorowski

   OriginalPaper Pages: 145 - 148

3. Discussive sentential calculus of Jaśkowski

   • Jerzy Kotas

   OriginalPaper Pages: 149 - 168

4. Causal implications of Jaśkowski

   • August Pieczkowski

   OriginalPaper Pages: 169 - 185

5. On the Jaśkowski's method of suppositions

   • Ewa Orłowska

   OriginalPaper Pages: 187 - 200

6. The research of Jaśkowski on decidability theory of first order sentences (I)

   • Ryszard Kopiecki
   • Bogdan Saralski
   • Gerald Waligóra

   OriginalPaper Pages: 201 - 214