Mathematics – Differential Geometry
Scientific paper
2007-02-06
Journal of Geometry 85, no. 1-2, 15-21, 2006
Mathematics
Differential Geometry
Scientific paper
We give a short proof of the Gauss-Bonnet theorem for a real oriented Riemannian vector bundle $E$ of even rank over a closed compact orientable manifold $M$. This theorem reduces to the classical Gauss-Bonnet-Chern theorem in the special case when $M$ is a Riemannian manifold and $E$ is the tangent bundle of $M$ endowed with the Levi-Civita connection. The proof is based on an explicit geometric construction of the Thom class for 2-plane bundles.
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