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Rigidity and flatness of the image of certain classes of mappings having tangential Laplacian
In this paper we consider the PDE system of vanishing normal projection of the Laplacian for C 2 maps u : ℝ n ⊇ Ω → ℝ N : [ [ D u ] ] ⊥ Δ u = 0 in Ω . This system has discontinuous coefficients and geometrically …