Theoretical Computer Science
CSL '02 Proceedings of the 16th International Workshop and 11th Annual Conference of the EACSL on Computer Science Logic
Intuitionistic computability logic
Acta Cybernetica
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We show that the uniform validity is equivalent to the non-uniform validity for both Blass' semantics of [1] and Japaridze's semantics of [5] (thus proving a conjecture from [5]). We present a shorter proof (than that of [10]) of the completeness of the positive fragment of intuitionistic logic for both these semantics. Finally, we show that validity for the "parallel recurrence" version of Japaridze's semantics of [5] is equivalent to accomplishability in the sense of [4].