It is conjectured since long that for anyconvex body K∈ Rn there exists a point inthe interior of K which belongs to at least 2n normals from different points on theboundary of K. The conjecture is known to be true for n = 2, 3, 4. Motivated by a recent preprint of Y. Martinez-Maure [4], we give a short proof of his result: for dimension n≥ 3 , under mild conditions, almost every normalthrough a boundary point to a smooth convex body K∈ Rn contains an intersection point of at least 6 normals from different points on the boundary of K.

Original languageEnglish
Pages (from-to)529-532
Number of pages4
JournalActa Mathematica Hungarica
Volume167
Issue number2
Early online date22 Jul 2022
DOIs
StatePublished - Aug 2022

    Scopus subject areas

  • Mathematics(all)

    Research areas

  • bifurcation, Morse point, Morse–Cerf theory

ID: 98340849