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Positive Integral Kernels for Polar Derivatives

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Analysis of Operators on Function Spaces

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Abstract

The non-negativity on the unit disk of the real part of the polar derivative of a polynomial is proved via an integral representation with a positive kernel, or as a consequence of a weighted sum of hermitian squares decomposition.

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References

  1. L. Hörmander, On a theorem of Grace. Math. Scand. 2, 55–64 (1954)

    Article  MathSciNet  Google Scholar 

  2. D. Khavinson, R. Pereira, M. Putinar, E.B. Saff, S. Shimorin, Borcea’s variance conjectures on the critical points of polynomials, in Notions of Positivity and the Geometry of Polynomials, ed. by P. Brändén et al. Trends in Mathematics (Birkhäuser, Basel, 2011), pp 283–309.

    Chapter  Google Scholar 

  3. M. Putinar, C. Scheiderer, Quillen property of real algebraic varieties. Münster J. Math. 7, 671–696 (2014)

    MathSciNet  MATH  Google Scholar 

  4. Q.I. Rahman, G. Schmeisser, Analytic Theory of Polynomials (Oxford University Press, Oxford, 2002)

    MATH  Google Scholar 

  5. C. Scheiderer, Positivity and sums of squares: a guide to recent results, in Emerging Applications of Algebraic Geometry. The IMA Volumes in Mathematics and its Applications (Springer, New York, 2009), pp. 271–324

    Google Scholar 

  6. T. Sheil-Small, Complex Polynomials (Cambridge University Press, Cambridge, 2002)

    Book  Google Scholar 

  7. G. Szegö, Bemerkungen zu einem Satz von J. H. Grace über die Wurzeln algebraischer Gleichungen. Math. Z. 13, 28–55 (1922)

    MATH  Google Scholar 

  8. J.G. van der Corput, G. Schaake, Ungleichungen für Polynome und trigonometrische Polynome. Compos. Math. 2, 321–361 (1935)

    MathSciNet  MATH  Google Scholar 

  9. L. Walsh, On the location of the roots of certain types of polynomials. Trans. Am. Math. Soc. 24, 163–180 (1922)

    Article  MathSciNet  Google Scholar 

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Correspondence to Mihai Putinar .

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Putinar, M., Shimorin, S. (2019). Positive Integral Kernels for Polar Derivatives. In: Aleman, A., Hedenmalm, H., Khavinson, D., Putinar, M. (eds) Analysis of Operators on Function Spaces. Trends in Mathematics. Birkhäuser, Cham. https://doi.org/10.1007/978-3-030-14640-5_10

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