The Hessian of the distance from a surface in the Heisenberg group
Nicola Arcozzi, Fausto Ferrari
Abstract
We compute the horizontal Hessian of the signed Carnot-Charatheodory distance from a surface S in the Heisenberg group H. The expression for the Hessian is in terms of the surface's intrinsic curvatures. As an application, we compute the horizontal Hessian of the Carnot-Charatheodory distance from a point in H.
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