Skip to main content

q-Integral Operators

  • Chapter
  • First Online:
Applications of q-Calculus in Operator Theory

Abstract

For many years scientists have been investigating to develop various aspects of approximation results of above operators. The recent book written by Anastassiou and Gal [18] includes great number of results related to different properties of these type of operators and also includes other references on the subject. For example, in Chapter 16 of [18], Jackson-type generalization of these operators is one among other generalizations, which satisfy the global smoothness preservation property (GSPP). It has been shown in [19] that this type of generalization has a better rate of convergence and provides better estimates with some modulus of smoothness. Beside, in [22, 23], Picard and Gauss–Weierstrass singular integral operators modified by means of nonisotropic distance and their pointwise approximation properties in different normed spaces are analyzed. Furthermore, in [40, 110], Picard and Gauss Weierstrass singular integrals were considered in exponential weighted spaces for functions of one or two variables.

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

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 39.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 54.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 54.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  1. R. Álvarez-Nodarse, M.K. Atakishiyeva, N.M. Atakishiyev, On q-extension of the Hermite polynomials H n x with the continuous orthogonality property on R. Bol. Soc. Mat. Mexicana (3) 8, 127–139 (2002)

    Google Scholar 

  2. G.A. Anastassiou, Global smoothness preservation by singular integrals. Proyecciones 14 (2), 83–88 (1995)

    MathSciNet  MATH  Google Scholar 

  3. G.A. Anastassiou, A. Aral, Generalized Picard singular integrals. Comput. Math. Appl. 57 (5), 821–830 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  4. G.A. Anastassiou, S.G. Gal, Approximation Theory: Moduli of Continuity and Global Smoothness Preservation (Birkhäuser, Boston, 2000)

    Book  Google Scholar 

  5. G.A. Anastassiou, S.G. Gal, Convergence of generalized singular integrals to the unit, univariate case. Math. Inequal. Appl. 3 (4), 511–518 (2000)

    MathSciNet  MATH  Google Scholar 

  6. A. Aral, On convergence of singular integrals with non-isotropic kernels. Comm. Fac. Sci. Univ. Ank. Ser. A1 50, 88–98 (2001)

    Google Scholar 

  7. A. Aral, On a generalized λ-Gauss–Weierstrass singular integrals. Fasc. Math. 35, 23–33 (2005)

    MathSciNet  MATH  Google Scholar 

  8. A. Aral, On the generalized Picard and Gauss Weierstrass singular integrals. J. Comput. Anal. Appl. 8 (3), 246–261 (2006)

    MathSciNet  Google Scholar 

  9. A. Aral, Pointwise approximation by the generalization of Picard and Gauss–Weierstrass singular integrals. J. Concr. Appl. Math. 6 (4), 327–339 (2008)

    MathSciNet  MATH  Google Scholar 

  10. A. Aral, S.G. Gal, q-Generalizations of the Picard and Gauss–Weierstrass singular integrals. Taiwan. J. Math. 12 (9), 2501–2515 (2008)

    MathSciNet  MATH  Google Scholar 

  11. N.M. Atakishiyev, M.K. Atakishiyeva, A q-analog of the Euler gamma integral. Theor. Math. Phys. 129 (1), 1325–1334 (2001)

    Article  MATH  Google Scholar 

  12. C. Berg, From discrete to absolutely continuous solution of indeterminate moment problems. Arap. J. Math. Sci. 4 (2), 67–75 (1988)

    Google Scholar 

  13. K. Bogalska, E. Gojtka, M. Gurdek, L. Rempulska, The Picard and the Gauss–Weierstrass singular integrals of functions of two variable. Le Mathematiche LII (Fasc 1), 71–85 (1997)

    MathSciNet  Google Scholar 

  14. R.A. DeVore, G.G. Lorentz, Constructive Approximation (Springer, Berlin, 1993)

    Book  MATH  Google Scholar 

  15. O. Dogru, V. Gupta, Korovkin type approximation properties of bivariate q-Meyer König and Zeller operators. Calcolo 43, 51–63 (2006)

    Article  MathSciNet  MATH  Google Scholar 

  16. A.D. Gadjiev, A. Aral, The weighted L p -approximation with positive operators on unbounded sets, Appl. Math. Letter 20 (10), 1046–1051 (2007)

    Article  MathSciNet  MATH  Google Scholar 

  17. S.G. Gal, Degree of approximation of continuous function by some singular integrals. Rev. Anal. Numér. Théor. Approx. XXVII (2), 251–261 (1998)

    MathSciNet  Google Scholar 

  18. S.G. Gal, Remark on degree of approximation of continuous function by some singular integrals. Math. Nachr. 164, 197–199 (1998)

    Article  MathSciNet  Google Scholar 

  19. N.K. Govil, V. Gupta, Convergence of q-Meyer–König-Zeller–Durrmeyer operators. Adv. Stud. Contemp. Math. 19, 97–108 (2009)

    MathSciNet  MATH  Google Scholar 

  20. W. Heping, Properties of convergence for the q-Meyer–König and Zeller operators. J. Math. Anal. Appl. 335 (2), 1360–1373 (2007)

    Article  MathSciNet  MATH  Google Scholar 

  21. W. Heping, X. Wu, Saturation of convergence of q-Bernstein polynomials in the case q ≥ 1. J. Math. Anal. Appl. 337 (1), 744–750 (2008)

    Article  MathSciNet  MATH  Google Scholar 

  22. V.P. II’in, O.V. Besov, S.M. Nikolsky, The Integral Representation of Functions and Embedding Theorems (Nauka, Moscow, 1975) [in Russian]

    Google Scholar 

  23. A. Lesniewicz, L. Rempulska, J. Wasiak, Approximation properties of the Picard singular integral in exponential weighted spaces. Publ. Mat. 40, 233–242 (1996)

    Article  MathSciNet  MATH  Google Scholar 

  24. G.G. Lorentz, Bernstein Polynomials. Math. Expo., vol. 8 (University of Toronto Press, Toronto, 1953)

    Google Scholar 

  25. E.M. Stein, G. Weiss, Introduction to Fourier Analysis on Euclidean Spaces (Princeton University Press, Princeton, 1971)

    MATH  Google Scholar 

  26. T. Trif, Meyer, König and Zeller operators based on the q-integers. Rev. Anal. Numér. Théor. Approx. 29, 221–229 (2002)

    MathSciNet  Google Scholar 

  27. V.S. Videnskii, On some class of q-parametric positive operators, Operator Theory: Advances and Applications 158, 213–222 (2005)

    Article  MathSciNet  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

Copyright information

© 2013 Springer Science+Business Media New York

About this chapter

Cite this chapter

Aral, A., Gupta, V., Agarwal, R.P. (2013). q-Integral Operators. In: Applications of q-Calculus in Operator Theory. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6946-9_3

Download citation

Publish with us

Policies and ethics