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Approximation of Poisson Integrals by de la Vallée Poussin Sums

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On the classes of Poisson integrals of functions belonging to unit balls in the spaces C and L, we obtain asymptotic equalities for the upper bounds of approximations by de la Vallée Poussin sums in the uniform metric and the integral metric, respectively.

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REFERENCES

  1. A. I. Stepanets, Classification and Approximation of Periodic Functions [in Russian], Naukova Dumka, Kiev (1987).

    Google Scholar 

  2. C. J. de la Vallée Poussin, Lecons sur l'Approximation des Fonctions d'Une Variable Réelle, Gauthier-Villars, Paris (1919).

    Google Scholar 

  3. S. M. Nikol'skii, “On some methods of approximation by trigonometric sums,” Izv. Akad. Nauk SSSR, Ser. Mat., 4, 509–520 (1940).

    Google Scholar 

  4. S. B. Stechkin, “On de la Vallée Poussin sums,” Dokl. Akad. Nauk SSSR, 80, 545–548 (1951).

    Google Scholar 

  5. S. B. Stechkin, “On the approximation of periodic functions by de la Vallée Poussin sums,” Anal. Math., 4, 61–74 (1978).

    Google Scholar 

  6. O. D. Gabisoniya, “On approximation of functions of many variables by entire functions,” Izv. Vyssh. Uchebn. Zaved, Ser. Mat., 45, No. 2, 30–35 (1965).

    Google Scholar 

  7. A. Kolmogoroff, “Zur Grössenordnung des Restgliedes Fourierschen Reihen differenzierbarer Funktionen,” Ann. Math., 36, No. 2, 521–526 (1935).

    Google Scholar 

  8. S. A. Telyakovskii, “Approximation of differentiable functions by de la Vallée Poussin sums,” Dokl. Akad. Nauk SSSR, 121, No. 3, 426–429 (1958).

    Google Scholar 

  9. S. A. Telyakovskii, “Approximation of functions differentiable in the Weyl sense by de la Vallée Poussin sums,” Dokl. Akad. Nauk SSSR, 131, No. 2, 259–262 (1960).

    Google Scholar 

  10. S. A. Telyakovskii, “On approximation of differentiable functions by linear means of their Fourier series,” Izv. Akad. Nauk SSSR, Ser. Mat., 24, No. 2, 213–242 (1960).

    Google Scholar 

  11. S. A. Telyakovskii, “On norms of trigonometric polynomials and approximation of differentiable functions by linear means of their Fourier series. I,” Tr. Mat. Inst. Akad. Nauk SSSR, 62, 61–97 (1961).

    Google Scholar 

  12. S. A. Telyakovskii, “On norms of trigonometric polynomials and approximation of differentiable functions by linear means of their Fourier series. II,” Izv. Akad. Nauk SSSR, Ser. Mat., 27, No. 2, 253–272 (1963).

    Google Scholar 

  13. A. F. Timan, “Generalization of some results of Kolmogorov and Nikol'skii,” Dokl. Akad. Nauk SSSR, 81, No. 4, 509–511 (1951).

    Google Scholar 

  14. A. F. Timan, Approximation Theory of Functions of a Real Variable [in Russian], Fizmatgiz, Moscow (1960).

    Google Scholar 

  15. A. V. Efimov, “On approximation of periodic functions by de la Vallée Poussin sums. I,” Izv. Akad. Nauk SSSR, Ser. Mat., 23, No. 5, 737–770 (1959).

    Google Scholar 

  16. A. V. Efimov, “On approximation of periodic functions by de la Vallée Poussin sums. II,” Izv. Akad. Nauk SSSR, Ser. Mat., 24, No. 3, 431–468 (1960).

    Google Scholar 

  17. V. I. Rukasov, “Approximation of functions of the class C βΨ ∞by linear means of their Fourier series,” Ukr. Mat. Zh., 39, ?No. 4, 478–483 (1987).

    Google Scholar 

  18. V. I. Rukasov, “Approximations of functions defined on the real axis by de la Vallée Poussin operators,” Ukr. Mat. Zh., 44, No. 5, 682–690 (1992).

    Google Scholar 

  19. V. I. Rukasov and O. A. Novikov, “Approximation of analytic functions by de la Vallée Poussin sums,” in: Fourier Sums: Theory and Applications [in Ukrainian], Institute of Mathematics, Ukrainian Academy of Sciences, Kiev (1998), pp. 228–241.

    Google Scholar 

  20. A. I. Stepanets, Methods of Approximation Theory [in Russian], Vol. 2, Institute of Mathematics, Ukrainian Academy of Sciences, Kiev (2002).

    Google Scholar 

  21. V. I. Rukasov and S. O. Chaichenko, “Approximation of analytic functions by de la Vallée Poussin sums,” Ukr. Mat. Zh., 54, No. 12, 1653–1668 (2002).

    Google Scholar 

  22. V. I. Rukasov, “Approximation of classes of analytic functions by de la Vallée Poussin sums,” Ukr. Mat. Zh., 55, No. 6, 806–816 (2003).

    Google Scholar 

  23. A. I. Stepanets and A. S. Serdyuk, “Lebesgue inequalities for Poisson integrals,” Ukr. Mat. Zh., 52, No. 6, 798–808 (2000).

    Google Scholar 

  24. S. M. Nikol'skii, “Approximation of functions by trigonometric polynomials in the mean,” Izv. Akad. Nauk SSSR, Ser. Mat., 10, 207–256 (1946).

    Google Scholar 

  25. S. B. Stechkin, “Estimate for the remainder of Fourier series for differentiable functions,” Tr. Mat. Inst. Akad. Nauk SSSR, 145, 126–151 (1980).

    Google Scholar 

  26. L. Fejér, “Lebesguesche Konstanten und divergente Fourierreiher,” J. Reine Angew. Math., 138, 22–53 (1910).

    Google Scholar 

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Serdyuk, A.S. Approximation of Poisson Integrals by de la Vallée Poussin Sums. Ukrainian Mathematical Journal 56, 122–134 (2004). https://doi.org/10.1023/B:UKMA.0000031707.50226.b9

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  • DOI: https://doi.org/10.1023/B:UKMA.0000031707.50226.b9

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