Skip to main content
Log in

Whitney theorem of interpolatory type for k-monotone functions

  • Published:
Constructive Approximation Aims and scope

Abstract

One of the main results of this paper is the following Whitney theorem of interpolatory type for k-monotone functions (i.e., functions f such that divided differences f[x 0,…, x k ] are nonnegative for all choices of (k + 1) distinct points x 0,…, x k .

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. Yu. A. Brudnyi (1964): On a theorem concerning local best approximation. Uchen. Zap. Kazansk. Univ., 124:43–49. (Russian).

    MathSciNet  Google Scholar 

  2. P. S. Bullen (1971): A criterion for n-convexity. Pacific J. Math., 36:81–98.

    MATH  MathSciNet  Google Scholar 

  3. H. Burkill (1952): Cesaro-Perron almost periodic functions. Proc. London Math. Soc., 3:150–174.

    Article  MathSciNet  Google Scholar 

  4. R. A. DeVore, G. G. Lorentz (1993): Constructive Approximation. Berlin: Springer-Verlag.

    MATH  Google Scholar 

  5. K. A. Kopotun (1998): Approximation of k-monotone functions, J. Approx. Theory, 94:481–493.

    Article  MATH  MathSciNet  Google Scholar 

  6. J. E. Pečarić, F. Proschan, Y. L. Tong (1992): Convex Functions, Partial Orderings, and Statistical Applications. Mathematics in Science and Engineering, Vol. 187. Boston: Academic Press.

    Google Scholar 

  7. A. W. Roberts, D. E. Varberg (1973): Convex Functions. New York: Academic Press.

    MATH  Google Scholar 

  8. E. A. Storozhenko (1977): On the approximation of functions of class L P, 0 < p < 1, by algebraic polynomials. Izv. Akad. Nauk SSSR Ser. Mat., 41:652–662. English translation in Math. USSR Izv., 41 (1977).

    MATH  MathSciNet  Google Scholar 

  9. H. Whitney (1957): On functions with n-th bounded differences. J. Math. Pures Appl., 36:63–85.

    MathSciNet  Google Scholar 

  10. H. Whitney (1959): On bounded functions with bounded n-th differences. Proc. Amer. Math. Soc., 10:480–481.

    Article  MATH  MathSciNet  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to K. A. Kopotun.

Additional information

Communicated by Vilmos Totik.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kopotun, K.A. Whitney theorem of interpolatory type for k-monotone functions. Constr. Approx 17, 307–317 (2001). https://doi.org/10.1007/s003650010031

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s003650010031

AMS classification

Key words and phrases

Navigation