🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTürkçeРусскийالعربيةفارسیไทย한국어中文日本語EntityQ574946· pop 28· linked from 99 articleslogical NORAlso known as Peirce's arrow, non-disjunction, NOR operation, ↓binary operation that is true if and only if both operands are falseWikidata factsImageVenn1000.svgSources (2)wikidata.orgru.wikipedia.orgvia Wikidata · CC0Available in 27 languagesEspañolFrançaisDeutsch中文日本語РусскийItalianoالعربيةBasqueEsperantoFinnishConnectionsBoolean algebraEntitySheffer strokeEntityCategoriesCharles Sanders PeirceLogical connectives