Home›Browse›discrete space🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTiếng ViệtTürkçeРусскийالعربيةفارسی한국어中文日本語EntityQ175116· pop 21· linked from 293 articlesdiscrete spaceSign in to savetopological space whose every subset is both open and closedAvailable in 21 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةEsperantoFinnishIdoKazakhNederlandsPolskiSerbianTürkçeUkrainianShow 2 moreفارسی한국어via Wikidata sitelinks · CC0