EntityQ3518152· pop 5· linked from 13 articlesCotton tensorSign in to saverank-3 tensor defined for a 3d (pseudo-)Riemannian manifold which measures the degree to which it fails to be conformally flatConnectionsnecessity and sufficiencyEntityLuther P. EisenhartEntityInternational Standard Book NumberEntitygeneral relativityEntitydigital object identifierEntitydifferential geometryEntitybibcodeEntityOxford University PressEntityQ118398EntityEinstein field equationsEntityHamiltonian mechanicsEntityPrinceton University PressEntitystress–energy tensorEntitymetric tensorEntityYvonne Choquet-BruhatEntityChristoffel symbolEntitydifferential formEntityRiemann curvature tensorEntitytensor fieldEntityRicci curvatureEntityCategoriesRiemannian geometryTensorsTensors in general relativity