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MODEL-THEORETIC CHARACTERIZATION OF INTUITIONISTIC PROPOSITIONAL FORMULAS

Published online by Cambridge University Press:  19 March 2013

GRIGORY K. OLKHOVIKOV*
Affiliation:
Department of Philosophy, Ural Federal University
*
*DEPARTMENT OF PHILOSOPHY URAL FEDERAL UNIVERSITY 51 LENIN AVENUE, OFF 332 YEKATERINBURG RUSSIA 620083 E-mail: grigory.olkhovikov@usu.ru, grigory.olkhovikov@gmail.com

Abstract

Notions of k-asimulation and asimulation are introduced as asymmetric counterparts to k-bisimulation and bisimulation, respectively. It is proved that a first-order formula is equivalent to a standard translation of an intuitionistic propositional formula iff it is invariant with respect to k-asimulations for some k, and then that a first-order formula is equivalent to a standard translation of an intuitionistic propositional formula iff it is invariant with respect to asimulations. Finally, it is proved that a first-order formula is equivalent to a standard translation of an intuitionistic propositional formula over the class of intuitionistic Kripke models iff it is invariant with respect to asimulations between intuitionistic models.

Type
Research Article
Copyright
Copyright © Association for Symbolic Logic 2013 

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References

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