🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaРусскийفارسی한국어中文日本語EntityQ1193403· pop 17· linked from 69 articlesregular spaceAlso known as T3 space, T₃ spacetopological space in which a point and a closed set are, if disjoint, separable by neighborhoodsAvailable in 17 languagesEspañolFrançaisDeutsch中文PortuguêsItalianoCatalanEsperantoGalicianHebrewNederlandsConnectionsKolmogorov spaceEntitytopological spaceEntityCategoriesProperties of topological spacesSeparation axioms