English

Weighted cone-volume measures of pseudo-cones

Metric Geometry 2024-07-09 v1

Abstract

A pseudo-cone in Rn{\mathbb R}^n is a nonempty closed convex set KK not containing the origin and such that λKK\lambda K \subseteq K for all λ1\lambda\ge 1. It is called a CC-pseudo-cone if CC is its recession cone, where CC is a pointed closed convex cone with interior points. The cone-volume measure of a pseudo-cone can be defined similarly as for convex bodies, but it may be infinite. After proving a necessary condition for cone-volume measures of CC-pseudo-cones, we introduce suitable weights for cone-volume measures, yielding finite measures. Then we provide a necessary and sufficient condition for a Borel measure on the unit sphere to be the weighted cone-volume measure of some CC-pseudo-cone.

Keywords

Cite

@article{arxiv.2407.05095,
  title  = {Weighted cone-volume measures of pseudo-cones},
  author = {Rolf Schneider},
  journal= {arXiv preprint arXiv:2407.05095},
  year   = {2024}
}

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15 pages