🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTiếng ViệtРусскийفارسی한국어中文日本語EntityQ91267214· pop 19discrete topologysimple topology in which every subset is openAvailable in 19 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoCatalanFinnishHebrewConnectionsdiscrete spaceEntity