lambda calculus
deductive lambda calculus – The consideration of the problems associated with considering lambda calculus as a Deductive system. domain theory – Study of certain posets giving denotational semantics for lambda calculus Harrop formula – A kind of constructive logical formula such that proofs are lambda terms Krivine machine – An abstract machine to interpret call-by-name in lambda calculus rewriting – Transformation of formulæ in formal systems SECD machine – A virtual machine designed for the lambda calculus Unlambda – An esoteric functional programming language based on combinatory logic