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A counterexample to a Penrose inequality conjectured by Gibbons
counterexample Penrose inequality Gibbons
2011/3/3
We show that the Brill-Lindquist initial data provides a counterexample to a Riemannian Penrose inequality with charge conjectured by G. Gibbons. The observation illustrates a sub-additive characteris...
Discussion on Lechicki and Spakowski's counterexample
Lechicki Spakowski's counterexample
2010/11/29
It is well-known that intersection of continuous correspondences can lost the continuity
property. Lechicki and Spakowski’s theorem says that intersection of H-lsc functions remains
H-lsc if the int...