🌐EnglishEnglishРусскийEntityQ4534029· pop 5Q4534029Sign in to saveWikidata factsShow 1 more factP8168Hausdorff maximal principleSources (3)en.wikipedia.orgwikidata.orguk.wikipedia.orgvia Wikidata · CC0Available in 4 languagesРусскийArmenianChechenUkrainianvia Wikidata sitelinks · CC0