🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtРусскийفارسی한국어中文日本語EntityQ907439· pop 8· linked from 65 articlesDirac operatorfirst-order differential linear operator on spinor bundle, whose square is the LaplacianAvailable in 8 languagesDeutsch中文РусскийNederlandsUkrainianفارسی한국어via Wikidata sitelinks · CC0ConnectionsWilliam Rowan HamiltonEntityLaplace operatorEntityCategoriesDifferential operatorsMathematical physicsQuantum operators