Linked from
The 54 pages that link to Propositional logic, each with the reason it gives.
Principia MathematicaRelated: The work begins its formal development with propositional logic.
Model checkingRelated: State labels and many verification conditions use propositional formulas.
Truth valueRelated: It studies valid inferences by tracking the truth values of formulas.
Logical implicationRelated: It treats implication as a basic connective with formal inference rules.
De Morgan's lawsRelated: Negating a conjunction or disjunction applies the laws directly.
NonogramRelated: A cell is filled or empty, and deductions combine those binary possibilities.