Jisho

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Noun, Suru verb, No-adjective
1. proof; verification; certification
Wikipedia definition
2. Mathematical proofIn mathematics, a proof is a demonstration that if some fundamental statements are assumed to be true, then some mathematical statement is necessarily true. Proofs are obtained from deductive reasoning, rather than from inductive or empirical arguments; a proof must demonstrate that a statement is always true (occasionally by listing all possible cases and showing that it holds in each), rather than enumerate many confirmatory cases.
Read “Mathematical proof” on English Wikipedia
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Read “Mathematical proof” on DBpedia

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