English

On the monotonicity of perimeter of convex bodies

Metric Geometry 2023-09-07 v1

Abstract

Let n2n\ge2 and let Φ ⁣:Rn[0,)\Phi\colon\mathbb{R}^n\to[0,\infty) be a positively 11-homogeneous and convex function. Given two convex bodies ABA\subset B in Rn\mathbb{R}^n, the monotonicity of anisotropic Φ\Phi-perimeters holds, i.e. PΦ(A)PΦ(B)P_\Phi(A)\le P_\Phi(B). In this note, we prove a quantitative lower bound on the difference of the Φ\Phi-perimeters of AA and BB in terms of their Hausdorff distance.

Keywords

Cite

@article{arxiv.1612.00295,
  title  = {On the monotonicity of perimeter of convex bodies},
  author = {Giorgio Stefani},
  journal= {arXiv preprint arXiv:1612.00295},
  year   = {2023}
}

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8 pages