Fractal star bodies

Tom 84 / 2009

Irmina Herburt, Maria Moszyńska, Dorette Pronk Banach Center Publications 84 (2009), 149-171 MSC: 52A30, 28A80. DOI: 10.4064/bc84-0-10


In 1989 R. Arnold proved that for every pair $(A,B)$ of compact convex subsets of $\mathbb R$ there is an Euclidean isometry optimal with respect to $L_2$ metric and if $f_0$ is such an isometry, then the Steiner points of $f_0(A)$ and $B$ coincide. In the present paper we solve related problems for metrics topologically equivalent to the Hausdorff metric, in particular for $L_p$ metrics for all $p \ge 2$ and the symmetric difference metric.


  • Irmina HerburtDepartment of Mathematics and Information Science
    Warsaw University of Technology
    Pl. Politechniki 1
    00-661 Warszawa, Poland
  • Maria MoszyńskaInstitute of Mathematics
    University of Warsaw
    Banacha 2
    02-097 Warszawa, Poland
  • Dorette PronkDepartment of Mathematics and Statistics
    Dalhousie University
    Halifax, NS, B3H 3J5, Canada

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