Article ID Journal Published Year Pages File Type
436794 Theoretical Computer Science 2013 11 Pages PDF
Abstract

Horčík and Terui [8] show that, if a substructural logic enjoys the disjunction property, then its tautology problem is PSPACE-hard. We prove that all substructural logics in the interval between intuitionistic logic and generalized Hájek basic logic have a PSPACE-hard tautology problem, which implies that uncountably many substructural logics lacking the disjunction property have a PSPACE-hard tautology problem.

Related Topics
Physical Sciences and Engineering Computer Science Computational Theory and Mathematics