Anisotropic area measures of convex bodies

Abstract

Motivated by the relative differential geometry, where the Euclidean normal vector of hypersurfaces is generalized by a relative normalization, we introduce anisotropic area measures of convex bodies, constructed with respect to a gauge body. Together with the anisotropic curvature measures, they are special cases of the newly introduced anisotropic support measures. We show that a convex body in ${\mathbb{R}}^n$, for which the anisotropic area measure of some order $k\in \{0,\dots ,n-2\}$ is proportional to the area measure of order $n-1$, must be a $k$-tangential body of the gauge body.

This preprint will not be published. Unfortunately, I forgot that the main result was already formulated as Corollary 2.16 by Daniel Hug in his Habilitationsschrift of 1999. It is available at https://freidok.uni-freiburg.de/data/167349