Logic for Computer Scientists/Modal Logic/Syntax

< Logic for Computer Scientists‎ | Modal Logic

SyntaxEdit

We assume the syntax of classical propositional logic as used in the chapters above. Additional we have the following two rules: If is a formula

are formulae.

The symbols and stand traditionally for possibility and necessity; in the context of temporal logic they stand for always and eventually, so that stands for is eventually true and for is always true.