Propositional logic prover

A local prover for propositional logic: parses formulas with not, and, or, if-then, if-and-only-if, builds the full truth table, decides tautology, contradiction and satisfiability, reports a counterexample, converts the negation to conjunctive form and runs resolution until it derives the empty clause.

Fill in the fields, run the tool and review the result. Your input is not added to a public page. Use the learning mode for calculation details.