Submitted by György Chityil ... on Fri, 01/19/2018 - 23:22 Hierarchy: NounDescription: {{mathematics|logic}} Proof of a statement adduced by deriving a contradiction from the statement's negation.Ngram: proof by contradictionNgram Text: proof by contradictionSource: WiktionaryIssue: 0Wiktionary tag: logicNgram Count: 3
