🌐EnglishEnglishEspañolPolskiРусскийفارسی日本語EntityQ5447001· pop 7· linked from 29 articlesfield equationWikimedia disambiguation pageAvailable in 7 languages日本語РусскийCatalanIdoPolskiفارسیvia Wikidata sitelinks · CC0Connectionspartial differential equationEntitycouplingEntityCategoriesApplied mathematicsClassical field theoryMathematical physicsPartial differential equationsQuantum field theory