Home›Browse›substitution🌐EnglishEnglishBahasa IndonesiaDeutschPortuguês한국어中文日本語EntityQ1522579· pop 6· linked from 448 articlessubstitutionSign in to saveconcept in logic; syntactic transformation on formal expressionsAvailable in 6 languagesDeutschPortuguêsAzerbaijaniBahasa Indonesia한국어via Wikidata sitelinks · CC0