The Graph Cases of the Riemannian Positive Mass and Penrose Inequalities in All Dimensions

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2011

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We consider complete asymptotically flat Riemannian manifolds that are the graphs of smooth functions over $\mathbb R^n$. By recognizing the scalar curvature of such manifolds as a divergence, we express the ADM mass as an integral of the product of the scalar curvature and a nonnegative potential function, thus proving the Riemannian positive mass theorem in this case. If the graph has convex horizons, we also prove the Riemannian Penrose inequality by giving a lower bound to the boundary integrals using the Aleksandrov-Fenchel inequality. We also prove the ZAS inequality for graphs in Minkowski space. Furthermore, we define a new quasi-local mass functional and show that it satisfies certain desirable properties.

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Lam, Mau-Kwong George (2011). The Graph Cases of the Riemannian Positive Mass and Penrose Inequalities in All Dimensions. Dissertation, Duke University. Retrieved from https://hdl.handle.net/10161/3857.

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