🌐EnglishEnglishDeutschEspañolItalianoالعربية中文日本語EntityQ1383836· pop 8· linked from 62 articlesexistential graphdiagrammatic notation for logical expressions proposed by PeirceWikidata factsImagePeirceAlphaGraphs.svgSources (1)wikidata.orgvia Wikidata · CC0Available in 7 languagesEspañolDeutsch中文日本語Italianoالعربيةvia Wikidata sitelinks · CC0Connectionspropositional calculusEntitysemioticsEntityCategoriesCharles Sanders PeirceHistory of logicHistory of mathematicsLogicLogical calculiLogical diagramsPhilosophical logic