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Rigidity of the Stable Norm on ToriKeywords: stable norm, p-norm, poincaré duality. Abstract: given a closed, orientable riemannian manifold, we study the stable norm on the real homology groups. in particular, for n≥ 2 we prove that a riemannian n-torus, which has the same stable norms as a flat n-torus on the first and n-1 homology groups, is in fact isometric to the flat torus.
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