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Macroscopic stability and simplicial norms of hypersurfaces

机译:Macroscopic stability and simplicial norms of hypersurfaces

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摘要

We introduce a Z-coefficient version of Guth's macroscopic stabil-ity inequality for almost-minimizing hypersurfaces. In manifolds with a lower bound on macroscopic scalar curvature, we use the inequality to prove a lower bound on areas of hypersurfaces in terms of the Gromov simplicial norm of their homology classes. We give examples to show that a very positive lower bound on macroscopic scalar curvature does not necessarily imply an upper bound on the areas of minimizing hypersurfaces.

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