Kripke countermodel
= Kripke countermodel
{c}
A Kripke countermodel to a formula $A$ is a <Kripke model for intuitionistic propositional logic> containing a world $w$ such that $w\nVdash A$.
= Kripke countermodel
{c}
A Kripke countermodel to a formula $A$ is a <Kripke model for intuitionistic propositional logic> containing a world $w$ such that $w\nVdash A$.