Weak Continuity of the Gauss-Codazzi-Ricci System for Isometric Embedding

Details Weak Continuity of the Gauss-Codazzi-Ricci System for Isometric Embedding Weak Continuity of the Gauss-Codazzi-Ricci System for Isometric Embedding

2009-04-23

arxiv.org/abs/0904.3583v1

Mathematics

Analysis of PDEs

Scientific paper

We establish the weak continuity of the Gauss-Coddazi-Ricci system for isometric embedding with respect to the uniform $L^p$-bounded solution sequence for $p>2$, which implies that the weak limit of the isometric embeddings of the manifold is still an isometric embedding. More generally, we establish a compensated compactness framework for the Gauss-Codazzi-Ricci system in differential geometry. That is, given any sequence of approximate solutions to this system which is uniformly bounded in $L^2$ and has reasonable bounds on the errors made in the approximation (the errors are confined in a compact subset of $H^{-1}_{\text{loc}}$), then the approximating sequence has a weakly convergent subsequence whose limit is a solution of the Gauss-Codazzi-Ricci system. Furthermore, a minimizing problem is proposed as a selection criterion. For these, no restriction on the Riemann curvature tensor is made.

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