Gandalf (theorem prover): Automated Theorem Prover, Semantic Web, Scheme (programming language)

E Equational Theorem Prover: Automated Proving, First Order Logic, Superposition Calculus

Skolem Normal Form: Existential Quantification, Automated Theorem Prover, Formula, First- order Logic, Thoralf

Haran's Diamond Theorem: Theorem, Mathematics, Hilbertian Field, Hilbert's Irreducibility Theorem