Abstract. In this paper, approximation order of the nonstationary tight frame approximation operators in Sobolev spaces is studied. We first give two lemmas and then obtain the main theorem. The final result shows that the functions in a large class of Sobolev spaces can be approximated by its approximation operators under the Sobolev norm.

Received: July 1, 2011

AMS Subject Classification: 42C15, 94A11

Key Words and Phrases: nonstationary, frames, Sobolev spaces, approximation order

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Source: International Journal of Pure and Applied Mathematics
ISSN printed version: 1311-8080
ISSN on-line version: 1314-3395
Year: 2011
Volume: 72
Issue: 4

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