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Algebraic geometry and sums of squares

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Abstract

We give a self-contained introduction to the geometry of real projective varieties. We then study the relationship between nonnegative polynomials and sums of squares on such varieties and explain a recent geometric characterization of projective varieties for which these two concepts coincide. This characterization unifies and explains several well-known theorems and connects sums of squares with one of the cornerstones of classical algebraic geometry, the classification of varieties of minimal degree.

Original languageEnglish
Title of host publicationSum of Squares
Subtitle of host publicationTheory and Applications
EditorsPablo A. Parrilo, Rekha R. Thomas
PublisherAmerican Mathematical Society
Pages59-82
Number of pages24
ISBN (Print)9781470450250
DOIs
StatePublished - 2020
Externally publishedYes
EventAMS Short Course on Sum of Squares: Theory and Applications, 2019 - Baltimore, United States
Duration: 14 Jan 201915 Jan 2019

Publication series

NameProceedings of Symposia in Applied Mathematics
Volume77
ISSN (Print)0160-7634
ISSN (Electronic)2324-7088

Conference

ConferenceAMS Short Course on Sum of Squares: Theory and Applications, 2019
Country/TerritoryUnited States
CityBaltimore
Period14/01/1915/01/19

Keywords

  • Nonnegative polynomials
  • Sums of squares
  • Varieties of minimal degree

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