🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTiếng ViệtTürkçeРусскийالعربيةفارسیहिन्दी한국어中文日本語EntityQ1142889· pop 27· linked from 119 articlesisolated pointpoint of a subset S where there exists a neighborhood around it that does not contain any other points of SAvailable in 27 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةहिन्दीConnectionspointEntitytopological spaceEntityCategoriesGeneral topology