Submitted by György Chityil ... on Fri, 01/19/2018 - 18:00 Hierarchy: NounDescription: {{mathematics|logic}} Either of two laws in formal {{l|en|logic}} which state that:Ngram: De Morgan's lawNgram Text: De Morgan's lawSource: WiktionaryIssue: 0Wiktionary tag: logicNgram Count: 3