Browsing by Autor "Grigoriy Blekherman"

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    Sums of Squares: A Real Projective Story
    (American Mathematical Society, 2021) Grigoriy Blekherman; Rainer Sinn; Gregory G. Smith; Mauricio Velasco
    How do we find the minimum of the function 2( 2 -) on the unit sphere? An algebraic way to see that the minimum equals -1 involves the decomposition