Generalizes Gauss-Bonnet to even-dim closed Riemannian manifolds: int_M Pf(Omega/2pi) = chi(M); Pfaffian of curvature 2-form integrates to Euler characteristic; Chern 1944.
Generalizes Gauss-Bonnet to even-dim closed Riemannian manifolds: int_M Pf(Omega/2pi) = chi(M); Pfaffian of curvature 2-form integrates to Euler characteristic; Chern 1944.