EntityQ1058662· pop 10· linked from 190 articlesDarboux's theoremSign in to savefoundational result in symplectic geometryConnectionsFrobenius theoremEntitymathematicsEntityInternational Standard Book NumberEntitydigital object identifierEntityInternational Standard Serial NumberEntitytheoremEntitymathematical inductionEntitydifferential geometryEntityOxford University PressEntityCambridge University PressEntityJean Gaston DarbouxEntityneighborhoodEntityRiemannian geometryEntityShiing-Shen ChernEntitySpringer Science+Business MediaEntitymetric tensorEntityJohann Friedrich PfaffEntitycoverEntitydifferential formEntityDusa McDuffEntityCategoriesCoordinate systems in differential geometryDifferential systemsMathematical physicsSymplectic geometryTheorems in differential geometry