🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiРусскийالعربية中文日本語EntityQ997521· pop 10· linked from 132 articlesorder isomorphismbijective order-preserving mapping between partially ordered setsAvailable in 10 languagesEspañolDeutsch中文ItalianoCatalanGreekHebrewPolskiUkrainianvia Wikidata sitelinks · CC0Connectionspartially ordered setEntityintervalEntityCategoriesMorphismsOrder theory