An integral formula for a pair of singular distributions
英文摘要：
The paper is devoted to differential geometry of singular distributions (i.e., of varying dimension) on a Riemannian manifold. Such distributions are defined as images of the tangent bundle under smooth endomorphisms. We prove the novel divergence theorem with the divergence type operator and deduce the Codazzi equation for a pair of singular distributions. Tracing our Codazzi equation yields expression of the mixed scalar curvature through invariants of distributions, which provides some splitting results. Applying our divergence theorem, we get the integral formula, generalizing the known one, with the mixed scalar curvature of a pair of transverse singular distributions.
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