🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoPortuguêsРусскийفارسی中文EntityQ1005222· pop 11· linked from 379 articlesalgebraic logicreasoning about equations with free variablesAvailable in 11 languagesFrançais中文ItalianoBahasa IndonesiaCatalanDanishKazakhUkrainianzh_yueفارسیvia Wikidata sitelinks · CC0Connectionsbinary relationEntityformal systemEntityCategoriesAlgebraic logicHistory of logic