References
N. I.Achiezer, Vorlesungen Über Approximationstheorie. Berlin 1953.
P. L. Butzer, Dominated convergence of Kantorovitch polynomials in the spaceL p . Trans. roy. Soc. Canada, Ser. III, Sect. III,46, 23–27 (1952).
P. L. Butzer, Linear combinations of Bernstein polynomials. Canadian J. Math.5, 559–567 (1953).
P. L. Butzer andW. Kozakiewicz, On the Riemann derivatives for integrable functions. Canadian J. Math.6, 572–581 (1954).
G. H. Hardy andJ. E. Littlewood, Some properties of fractional integrals. Math. Z.27, 565–606 (1928).
G. H. Hardy andJ. E. Littlewood, A convergence criterion for Fourier series. Math. Z.28, 612–634 (1928).
E.Hille, Functional analysis and semi-groups. Amer. Math. Soc. Col. Publ.31, New York, (1948).
G. G. Lorentz, Majorants in spaces of integrable functions. Amer. J. Math.77, 484–492 (1955).
I. P.Natanson, Konstruktive Funktionentheorie. Berlin 1955.
I. P.Natanson, Theorie der Funktionen einer reellen Veränderlichen. Berlin 1954.
O. Perron, Über die Approximation stetiger Funktionen durch trigonometrische Polynome. Math. Z.47, 57–65 (1942).
E. S. Quade, Trigonometric approximation in the mean. Duke math. J.3, 529–543 (1937).
P. Romanovsky, Quelques considerations sur la théorie des intégrales singulières. Math. Z.34, 34–39 (1932).
Károly, Tandori, Über die Konvergenz singulärer Integrale. Acta Sci. math.15, 223–230 (1954).
C. de laVallée-Poussin, Sur l'approximation des fonctions d'une variable réelle et de leurs dérivées par les polynÔmes et des suites limitées de Fourier. Bull. Acad. Roy. de Belgique3, 193–254 (1908).
M. Zamansky, Classes de saturation de certains procédés d'approximation. Ann. Sci. Ec. norm. sup. III. Sér.,66, 19–93 (1949).
A. Zygmund, Smooth functions. Duke Math. J.12, 47–76 (1945).
A.Zygmund, Trigonometrical series. Warsaw 1935.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Butzer, P.L. On the singular integral of de la Vallée-Poussin. Arch. Math 7, 295–309 (1956). https://doi.org/10.1007/BF01900307
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01900307