🌐EnglishEnglishItalianoNederlandsPolskiPortuguêsTürkçeРусскийفارسی中文日本語EntityQ737892· pop 8· linked from 6 articlesBendixson–Dulac theoremtheoremAvailable in 8 languages中文РусскийItalianoCatalanEsperantoPolskiفارسیvia Wikidata sitelinks · CC0ConnectionsmathematicsEntityInternational Standard Book NumberEntityCategoriesDifferential equationsTheorems in dynamical systems