EntityQ2372244· pop 8· linked from 336 articlessymbolSign in to savebasic element of strings in a formal languageConnectionssemantic theory of truthEntitymathematical logicEntitystringEntityfirst-order logicEntityformal systemEntityrecursive setEntitytype–token distinctionEntitysemantics of logicEntitystructureEntityground expressionEntitydiagramEntitymathematicsEntitylogicEntityNoam ChomskyPersonset theoryEntityfunctionEntitysetEntityaxiomEntitytheoremEntityconceptEntityCategoriesAbstractionConcepts in logicFormal languagesLogic symbolsMetalogicSyntax (logic)