🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiPortuguêsSvenskaTiếng ViệtРусский한국어中文日本語EntityQ1513048· pop 17· linked from 180 articlesupward directed setAlso known as directed set, filtered setpreordered set whose every finite subset has an upper boundAvailable in 17 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianobe_x_oldCzechConnectionspartially ordered setEntityseriesEntityCategoriesBinary relationsGeneral topologyOrder theory