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General Markov-Bernstein and Nikolskii type inequalities

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Approximation Theory and its Applications

Abstract

In this paper, we demonstrate how the continuity properties of the logarithmic potential of certain equilibrium measure leads to very general polynomial inequalities. Typical inequalities considered are those which estimate the norm of the derivative of a polynomial in terms of the norm of the polynomial itself and those which compare different norms of the same polynomial.

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References

  1. Freud, G., On Markov-Bernstein-type Inequalities and their Applications, J. Approx. Theo., 19(1977), 22–37.

    Article  MATH  MathSciNet  Google Scholar 

  2. Geronimus, Ya. L., Orthogonal Polynomials, Consultants Bureau, New York, 1961.

    MATH  Google Scholar 

  3. Levin, A.L. and Lubinsky, D.S., Cannonical Products and the Weights exp(−|x|a)α>1, with Applications, J. Approx. Theo., 49(1987), 149–169.

    Article  MATH  MathSciNet  Google Scholar 

  4. Lorentz, G.G.. Approximation of Functions, Holt, Rinehart and Winston, New York, 1966.

    MATH  Google Scholar 

  5. Lubinsky, D.S., Mhaskar, H.N. and Saff, E.B., A Proof of Freud's Conjecture for Exponential Weights, Constr. Approx., 4(1988), 65–83.

    Article  MATH  MathSciNet  Google Scholar 

  6. Lubinsky, D.S. and Saff, E.B., Strong Asymptotics for Extremal Polynomials Associated with Weights on R, Lecture Notes in Math., Vol. 1305, Springer Verlag, Berlin, 1988.

    Google Scholar 

  7. Mhaskar, H.N., Weighted Analogues of Nikolskii Type Inequalities and their Applications, Conf. Harmonic Anal. In Honor of A. Zygmund (edited by Beckner, Calderon, Fefferman and Jones), Vol. II, Wadsworth International, Belmont, California, 1983, 783–801.

    Google Scholar 

  8. Mhaskar, H.N. and Saff, E.B., Extremal Problems for Polynomials with Exponential Weights, Trans. Amer. Math Soc., 285(1984), 203–234.

    Article  MATH  MathSciNet  Google Scholar 

  9. Mhaskar, H.N. and Saff, E.B., Where Does the Sup Norm of a Weighted Polynomial Live? (A generalization if incomplete polynomials), Constr. Approx., 1(1985), 71–91.

    Article  MATH  MathSciNet  Google Scholar 

  10. Mhaskar, H.N. and Saff, E.B., Were Does theL p Norm of a Weighted Polynomial Live? Trans. Amer. Math. Soc., 303(1987), 109–124 (Errata: Trans. Amer. Math. Soc., 308(1988), p. 431).

    Article  MATH  MathSciNet  Google Scholar 

  11. Mhaskar, H.N. and Saff, E.B., The Distribution of Zeros of Asymptotically Extremal Polynomials, to appear in J. Approx. Theo.

  12. Nevai, P. Orthogonal Polynomials, Mem. Amer. Math. Soc., No. 213, 1979.

  13. Saff, E.B., Totik, V. and Mhaskar, H.N., Weighted Polynomials and Potentials in the Complex Plane, Manuscript.

  14. Timan, A.F., Theory of Approximation of Functions of a Real Variable, Macmillan, New York, 1963.

    MATH  Google Scholar 

  15. Tsuji, M., Potential Theory in Modern Function Theory, 2nd ed., Chelsea, New York, 1958.

    Google Scholar 

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Mhaskar, H.N. General Markov-Bernstein and Nikolskii type inequalities. Approx. Theory & its Appl. 6, 107–117 (1990). https://doi.org/10.1007/BF02836312

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  • DOI: https://doi.org/10.1007/BF02836312

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