EntityQ655742· pop 31· linked from 197 articlesmodus ponensSign in to saveif X implies Y, and X is true, then Y is trueConnectionsdouble negationEntitypropositionEntityWilliam ShakespearePersonLatinEntityArtificial intelligenceConcepttruthEntityBertrand RussellEntityLudwig WittgensteinEntityInternational Standard Book NumberEntityThomas HobbesEntityHamletEntityGeorg CantorEntityKurt GödelEntitystoicismEntitydigital object identifierEntityInternational Standard Serial NumberEntityAlfred North WhiteheadEntityTheophrastusEntityQ134661Entitylist of Latin phrasesEntityCategoriesClassical logicLatin logical phrasesRules of inferenceTheorems in propositional logic