🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPortuguêsРусскийالعربية한국어中文日本語EntityQ1064500· pop 16· linked from 361 articlessymplectic manifoldin differential geometry, a smooth manifold equipped with a closed, nondegenerate differential 2-formConnectionsexterior algebraEntityalmost complex manifoldEntityCategoriesDifferential topologyHamiltonian mechanicsSmooth manifoldsSymplectic geometry