EntityQ574946· pop 28· linked from 99 articleslogical NORSign in to savebinary operation that is true if and only if both operands are falseConnectionsBoolean algebraEntitySheffer strokeEntityfunctional completenessEntityexistential graphEntitypropositional calculusEntitypropositionEntitylogical operatorEntitymonotonic functionEntitydisjunctive normal formEntityMoonConceptcomputerEntityInternational Standard Book NumberEntityprogramming languageEntitydigital object identifierEntityInternational Standard Serial NumberEntitymathematical logicEntitypragmatismEntityCharles Sanders PeirceEntityLibrary of Congress Control NumberEntitylogic gateEntityCategoriesCharles Sanders PeirceLogical connectives