Skip to main content
Log in

Kantorovich sequences associated to general approximation processes

  • Published:
Positivity Aims and scope Submit manuscript

Abstract

Starting from a general sequence of linear positive operators of discrete type we indicate a method to associate its an integral extension in Kantorovich sense. Numerous special cases are highlighted. Approximation properties of this extension are stated. Our goal is to show how such properties can be inherited from the discrete process to the integral construction.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Agratini, O.: On approximation properties of Balázs–Szabados operators and their Kantorovich extension. Korean J. Comput. Appl. Math. 9(2), 361–372 (2002)

    MATH  MathSciNet  Google Scholar 

  2. Altomare, F., Campiti, M.: Korovkin-type Approximation Theory and its Applications. de Gruyter Studies in Mathematics, vol. 17. Walter de Gruyter, Berlin (1994)

    Book  Google Scholar 

  3. Altomare, F., Cappelletti Montano, M., Leonessa, V.: On a generalization of Szász–Mirakjan–Kantorovich operators. Results Math. 63, 837–865 (2013)

    Article  MATH  MathSciNet  Google Scholar 

  4. Balázs, K.: Approximation by Bernstein type rational functions. Acta Math. Acad. Sci. Hung 26(f. 1–2), 123–134 (1975)

  5. Balázs, C., Szabados, J.: Approximation by Bernstein type rational functions. II. Acta Math. Acad. Sci. Hung. 40, 331–337 (1982)

    Article  MATH  Google Scholar 

  6. Butzer, P.L.: On the extensions of Bernstein polynomials to the infinite interval. Proc. Am. Math. Soc. 5, 547–553 (1954)

    Article  MATH  MathSciNet  Google Scholar 

  7. Chlodovsky, I.: Sur le développement des fonctions définies dans un interval infini en séries de polynômes de M.S. Bernstein. Compos. Math. 4, 380–393 (1937)

    MathSciNet  Google Scholar 

  8. Ditzian, Z., Totik, V.: Moduli of Smoothness. New York Inc., Springer-Verlag (1987)

    Book  MATH  Google Scholar 

  9. Gadjiev, A.D., Orhan, C.: Some approximation theorems via statistical convergence. Rocky Mt. J. Math. 32(1), 129–138 (2002)

    Article  MATH  MathSciNet  Google Scholar 

  10. Habib, A., Wafi, A.: Degree of approximation of functions by modified Bernstein polynomials on an unbounded interval. Indian J. Pure Appl. Math. 8(6), 691–695 (1977)

    MATH  MathSciNet  Google Scholar 

  11. Jain, G.C.: Approximation of functions by a new class of linear operators. J. Austr. Math. Soc. 13(3), 271–276 (1972)

    Article  MATH  Google Scholar 

  12. Kantorovich, L.V.: Sur certains développement suivant les polynômes de la forme de S. Bernstein, I, II. C.R. Acad. URSS 563–568, 595–600 (1930)

  13. López-Moreno, A.J., Martinez-Moreno, J., Muñoz-Delgado, F.J.: Asymptotic behavior of Kantorovich type operators. Monogr. Semin. Mate. García Galdeano 27, 399–404 (2003)

    Google Scholar 

  14. Lorentz, G.G.: Bernstein Polynomials. University of Toronto Press, Toronto (1953)

    MATH  Google Scholar 

  15. Razi, Q.: Approximation of a function by Kantorovich type operators. Mate. Vesnik 41, 183–192 (1989)

    MATH  MathSciNet  Google Scholar 

  16. Shisha, O., Mond, B.: The degree of convergence of linear positive operators. Proc. Natl. Acad. Sci. USA 60, 1196–1200 (1968)

    Article  MATH  MathSciNet  Google Scholar 

  17. Stancu, D.D.: Approximation of functions by a new class of linear polynomial operators. Rev. Roumaine Math. Pures Appl. 8, 1173–1194 (1968)

    MathSciNet  Google Scholar 

  18. Umar, S., Razi, Q.: Approximation of functions by a generalized Szász operators. Commun. Fac. Sci. l’Univ. d’Ankara Ser. A1 Math. 34, 45–52 (1985)

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Octavian Agratini.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Agratini, O. Kantorovich sequences associated to general approximation processes. Positivity 19, 681–693 (2015). https://doi.org/10.1007/s11117-015-0322-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11117-015-0322-z

Keywords

Mathematics Subject Classification

Navigation