Smooth Approximation for Intrinsic Lipschitz Functions in the Heisenberg Group
نویسندگان
چکیده
We characterize intrinsic Lipschitz functions as maps which can be approximated by a sequence of smooth maps, with pointwise convergent intrinsic gradient. We also provide an estimate of the Lipschitz constant of an intrinsic Lipschitz function in terms of the L∞−norm of its intrinsic gradient.
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