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1. CJM 1997 (vol 49 pp. 74)
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Constrained approximation in Sobolev spaces Positive, copositive, onesided and intertwining (co-onesided) polynomial
and spline approximations of functions $f\in\Wp^k\mll$ are considered.
Both uniform and pointwise estimates, which are exact in some sense, are
obtained.
Keywords:Constrained approximation, polynomials, splines, degree of, approximation, $L_p$ space, Sobolev space Categories:41A10, 41A15, 41A25, 41A29 |