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Halgwrd Mohammed Darwesh
College of Science, University of Sulaimani
DOI: https://doi.org/10.17656/jzs.10177
Abstract
In this paper, we introduce a new concept of constrained approximation, which we call Log-convex
polynomial approximation in log. We obtained a direct theorem of log-convex polynomial approximation in
log for twice differentiable functions on [-1, 1], in term of the ordinary moduli of continuity.
Keywords: Shape preserving approximation, convex and log-convex functions, Splines,
moduli of continuity and smoothness.
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