Surveys in Approximation Theory, 3 (2007), 106-151.
Polynomial Approximation and ωφr(f,t) Twenty Years Later
Abstract. About twenty years ago the measure of smoothness ωφr(f,t) was introduced and related to the rate of polynomial approximation. In this article we survey developments about this and related concepts since that time.
Published: 16 September 2007.
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Department of Mathematical and Statistical Sciences
University of Alberta
Edmonton, Alberta, T6G 2G1