Large parallel volumes of finite and compact sets in d-dimensional Euclidean space

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  • Jürgen Kampf
    Jürgen KampfDepartment of Mathematics, TU KaiserslauternGermany
  • Markus Kiderlen

The r-parallel volume V (Cr) of a compact subset C in d-dimensional Euclidean space is the volume of the set Cr of all points of Euclidean distance at most r > 0 from C. According to Steiner’s formula, V (Cr) is a polynomial in r when C is convex. For finite sets C satisfying a certain geometric condition, a Laurent expansion of V (Cr) for large r is obtained. The dependence of the coefficients on the geometry of C is explicitly given by so-called intrinsic power volumes of C. In the planar case such an expansion holds for all finite sets C. Finally, when C is a compact set in arbitrary dimension, it is shown that the difference of large r-parallel volumes of C and of its convex hull behaves like crd−3, where c is an intrinsic power volume of C.

Original languageEnglish
PublisherCentre for Stochastic Geometry and advanced Bioimaging, Aarhus University
Number of pages19
StatePublished - 8 Dec 2011

    Research areas

  • large parallel sets, Laurent expansion of parallel volume, Steiner formula, intrinsic power volume

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