🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTiếng ViệtTürkçeРусскийالعربيةفارسیไทย한국어中文日本語EntityQ1165112· pop 29· linked from 595 articlessingletonAlso known as unit set, 1-tuple, single, monuple, monadset with exactly one elementAvailable in 29 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةBasqueCatalanConnectionsinitial and terminal objectsEntityset theoryEntityCategories1 (number)Basic concepts in set theory