Is self-reduction paradoxical? M. L. Dalla ChiaraG. Toraldo di Francia OriginalPaper Pages: 345 - 348
A note on direct products and ultraproducts of logical matrices Jan Zygmunt OriginalPaper Pages: 349 - 357
S-algebras and the degrees of maximality of three and four valued logics of Łukasiewicz Grzegorz Malinowski OriginalPaper Pages: 359 - 370
Constructing denumerable matrices strongly adequate for pre-finite logics Ewa GraczyńskaAndrzej Wroński OriginalPaper Pages: 417 - 423