Mixed volumes and the bochner method

Yair Shenfeld, Ramon Van Handel

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

At the heart of convex geometry lies the observation that the volume of convex bodies behaves as a polynomial. Many geometric inequalities may be expressed in terms of the coefficients of this polynomial, called mixed volumes. Among the deepest results of this theory is the Alexandrov-Fenchel inequality, which subsumes many known inequalities as special cases. The aim of this note is to give new proofs of the Alexandrov-Fenchel inequality and of its matrix counterpart, Alexandrov's inequality for mixed discriminants, that appear conceptually and technically simpler than earlier proofs and clarify the underlying structure. Our main observation is that these inequalities can be reduced by the spectral theorem to certain trivial "Bochner formulas".

Original languageEnglish (US)
Pages (from-to)5385-5402
Number of pages18
JournalProceedings of the American Mathematical Society
Volume147
Issue number12
DOIs
StatePublished - Jan 1 2019

All Science Journal Classification (ASJC) codes

  • Mathematics(all)
  • Applied Mathematics

Keywords

  • Alexandrov-Fenchel inequality
  • Bochner method
  • Convex geometry
  • Hyperbolic quadratic forms
  • Mixed discriminants
  • Mixed volumes

Fingerprint Dive into the research topics of 'Mixed volumes and the bochner method'. Together they form a unique fingerprint.

  • Cite this