ArticleOriginal scientific text

Title

Some Remarks on Rational Müntz Approximation on [0,∞)

Authors 1

Affiliations

  1. Department of Mathematics, Hangzhou University, Hangzhou, Zhejiang 310028, P.R. China

Abstract

The following result is proved in the present paper: Let {λn} be an increasing sequence of distinct real numbers which approaches a finite limit λ as n goes to infinity and for which Could not find \of for \root Then the rational combinations of {xλn} form a dense set in C0. One could note that the method used in this paper is probably more interesting than the result itself.

Bibliography

  1. J. Bak and D. J. Newman, Rational combinations of xλ_k, λk ≥ 0 are always dense in C[0,1], J. Approx. Theory 23 (1978), 155-157.
  2. E. W. Cheney, Introduction to Approximation Theory, McGraw-Hill, 1966.
  3. G. Somorjai, A Müntz-type problem for rational approximation, Acta Math. Acad. Sci. Hungar. 27 (1976), 197-199.
  4. Q. Y. Zhao and S. P. Zhou, Are rational combinations of {xλ_n}, λn ≥ 0, always dense in C0,, Approx. Theory Appl. 13 (1997), no. 1, 10-17.
  5. S. P. Zhou, On Müntz rational approximation, Constr. Approx. 9 (1993), 435-444.
Pages:
233-243
Main language of publication
English
Received
1997-12-08
Published
1998
Exact and natural sciences