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Proof | Reasoning, Validity, Argumentation | Britannica

https://britannica.com/topic/proof-logic

“Proof, in logic, an argument that establishes the validity of a proposition. Although proofs may be based on inductive logic, in general the term proof connotes a rigorous deduction. In formal axiomatic systems of logic and mathematics, a proof is a finite sequence of well-formed formulas” (the page’s own description)

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