A parser of relational predicate logic & truth tree solver, written in Rust.

Autonomous Theorem Prover for First Order Predicate Logic

Prove propositional logic tautologies via Smullyan's tableaux method

Library used for resolving simple logical problems.

Tautologisk Forening For Tautologi.

Haskell Tautology Checker and Parser

🧮 validation methods of propositional logic

Certified implementation in Coq of Stålmarck's algorithm for proving tautologies [maintainer=@palmskog]

semantic tableau is method of finding whether the given logic (propositional logic here) is consistent or inconsistent, whether it is valid (tautology) or not.

Forenede Tautologers Tautologiske Forening.

Simple tautology generator.

resolution refutation is method of finding whether the given antecedent implies the consequent or not, it could also be used to check validity of the expressions.