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    • Determination of Star Bodies from 𝑝-Centroid Bodies

      Lujun Guo Gangsong Leng

      Volume 123 Issue 4 November 2013 pp 577-586

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pmsc/123/04/0577-0586

    • Keywords

       

      𝑝-centroid body; star body; spherical integral transformation; 𝑝-cosine transformation.

    • Abstract

       

      In this paper, we prove that an origin-symmetric star body is uniquely determined by its 𝑝-centroid body. Furthermore, using spherical harmonics, we establish a result for non-symmetric star bodies. As an application, we show that there is a unique member of $\Gamma_p\langle K \rangle$ characterized by having larger volume than any other member, for all real $p \geq 1$ that are not even natural numbers, where $\Gamma_p\langle K \rangle$ denotes the 𝑝-centroid equivalence class of the star body 𝐾.

    • Author Affiliations

       

      Lujun Guo1 Gangsong Leng1

      1. Department of Mathematics, Shanghai University, Shanghai 200444, China

    • Dates

       
      Published
      November 2013
      Manuscript received
      20 June 2012
      Manuscript revised
      4 October 2012

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