Home›Browse›離散位相🌐日本語EnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTiếng ViệtРусскийفارسی한국어中文日本語EntityQ91267214· pop 19離散位相simple topology in which every subset is openAvailable in 19 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoCatalanFinnishHebrewConnectionsdiscrete spaceEntity