Submitted by György Chityil ... on Fri, 01/19/2018 - 17:08 Hierarchy: NounDescription: {{mathematics|logic}} A unary operation on logical values that changes true to false, and false to true.Ngram: NOTNgram Text: NOTSource: WiktionaryIssue: 0Wiktionary tag: logicNgram Count: 1Wikokit WikiText ID: 120400