On the Logic of Chronological Propositions
β Scribed by Rescher, Nicholas
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π SIMILAR VOLUMES
By fuzziΓΏcation we mean a procedure which assigns a fuzzy logic to an arbitrary crisp logic. In this paper we describe two essentially di erent fuzziΓΏcation procedures. In order to give a formal description of the notion of fuzziness of a formula, we extend the language of the propositional logic by
ON THE DECIDABILITY OF PROPOSITIONAL ALGORITHMIC LOGIC by BOGDAN S. CHLEBIJS in Warsaw (Po1and)l) 0. Introduction Let PAL be a n abbreviation for propositional algorithmic logic. The investigation of PAL is a continuation of earlier works on algorithmic logic (GRABOWSKI [3], KRECZMAR [5], SALWICKI [
This work concerns the model theory of propositional tense logic with the K R ~K E relational semantics. It is shown (i) that there is a formula y whose logical consequences form a complete l7: set, and (ii) that for 0 m < o + o there are formulas y,, such that all models of y m are isomorphic and h