Abstract
In this paper we give a new proof of the characterization of the closed fragment of the provability logic of Heyting’s Arithmetic. We also provide a characterization of the closed fragment of the provability logic of Heyting’s Arithmetic plus Markov’s Principle and Heyting’s Arithmetic plus Primitive Recursive Markov’s Principle.
Citation
Albert Visser. "Closed fragments of provability logics of constructive theories." J. Symbolic Logic 73 (3) 1081 - 1096, September 2008. https://doi.org/10.2178/jsl/1230396766
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