Subdiscriminant of symmetric matrices are sums of squares

Author Marie-Françoise Roy



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Marie-Françoise Roy

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Marie-Françoise Roy. Subdiscriminant of symmetric matrices are sums of squares. In Mathematics, Algorithms, Proofs. Dagstuhl Seminar Proceedings, Volume 5021, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2006)
https://doi.org/10.4230/DagSemProc.05021.20

Abstract

We present a very elementary algebraic proof providing an explicit sum of squares. This result generalizes a result on discriminants of symmetric matrices due to Ilyushechkin and proved also by P. Lax.
Keywords
  • Real algebra
  • sums of squares
  • subdiscriminants

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