Proof

Proof most often refers to: Proof (truth), argument or sufficient evidence for the truth of a proposition Alcohol proof, a measure of an alcoholic drink's strength Proof may also refer to:

==Mathematics and formal logic== Formal proof, a construct in proof theory Mathematical proof, a convincing demonstration that some mathematical statement is necessarily true Proof complexity, computational resources required to prove statements Proof procedure, method for producing proofs in proof theory Proof theory, a branch of mathematical logic that represents proofs as formal mathematical objects Statistical proof, demonstration of degree of certainty for a hypothesis