Home›Differential forms›庞加莱引理🌐中文EnglishDeutschEspañolFrançaisItalianoPolskiРусский中文日本語EntityQ18215105· pop 8· linked from 49 articles庞加莱引理Mathematical conditionAvailable in 8 languagesFrançaisDeutsch中文日本語ItalianoPolskiUkrainianvia Wikidata sitelinks · CC0Connectionsde Rham cohomologyEntitysimply connected spaceEntityCategoriesDifferential formsHenri PoincaréLemmas in mathematical analysis