equação Graceli relativista dimensional tensorial quântica de campos G* = = RGG[ ] G [ .] [ ] = {[ G* = ] / { [ ] [ .] , { [ ] [ ω , , ] / c }}. Normalized Ricci flow [ edit source ] Suppose that M is a compact smooth manifold, and let g t be a Ricci flow for t in the interval ( a , b ) . Define Ψ: ( a , b ) → (0, ∞) so that each of the Riemannian metrics Ψ( t ) g t has volume 1; this is possible since M is compact. (More generally, it would be possible if each Riemannian metric g t had finite volume.) Then define F : ( a , b ) → (0, ∞) to be the antiderivative of Ψ which vanishes at a . Since Ψ is positive-valued, F is a bijection onto its image (0,...