🌐EnglishEnglishEspañolFrançaisItalianoTürkçeРусскийفارسی한국어中文日本語EntityQ2579914· pop 10· linked from 90 articlesnonlinear Schrödinger equationnonlinear variation of the Schrödinger equationConnectionsintegrable systemEntityquantum mechanicsEntityCategoriesExactly solvable modelsIntegrable systemsNonlinear partial differential equationsSchrödinger equation