Pseudo-Canonical Formulae are Classical

Caminati, Marco B. and Kornilowicz, Artur (2014) Pseudo-Canonical Formulae are Classical. Formalized Mathematics.

Abstract

An original result about Hilbert Positive Propositional Calculus introduced in [11] is proven. That is, it is shown that the pseudo-canonical formulae of that calculus (and hence also the canonical ones) are a subset of the classical tautologies.