Annals of Pure and Applied Logic 159 (1-2):1-48 (2009)

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Abstract
We investigate the substitution Frege () proof system and its relationship to extended Frege () in the context of modal and superintuitionistic propositional logics. We show that is p-equivalent to tree-like , and we develop a “normal form” for -proofs. We establish connections between for a logic L, and for certain bimodal expansions of L.We then turn attention to specific families of modal and si logics. We prove p-equivalence of and for all extensions of , all tabular logics, all logics of finite depth and width, and typical examples of logics of finite width and infinite depth. In most cases, we actually show an equivalence with the usual system for classical logic with respect to a naturally defined translation.On the other hand, we establish exponential speed-up of over for all modal and si logics of infinite branching, extending recent lower bounds by P. Hrubeš. We develop a model-theoretical characterization of maximal logics of infinite branching to prove this result
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DOI 10.1016/j.apal.2008.10.005
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References found in this work BETA

Dual Weak Pigeonhole Principle, Boolean Complexity, and Derandomization.Emil Jeřábek - 2004 - Annals of Pure and Applied Logic 129 (1-3):1-37.
A Lower Bound for Intuitionistic Logic.Pavel Hrubeš - 2007 - Annals of Pure and Applied Logic 146 (1):72-90.

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Citations of this work BETA

Proof Complexity of Intuitionistic Implicational Formulas.Emil Jeřábek - 2017 - Annals of Pure and Applied Logic 168 (1):150-190.
Rules with Parameters in Modal Logic I.Emil Jeřábek - 2015 - Annals of Pure and Applied Logic 166 (9):881-933.
Topological Differential Fields and Dimension Functions.Nicolas Guzy & Françoise Point - 2012 - Journal of Symbolic Logic 77 (4):1147-1164.

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