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arxiv: math/0005032 · v1 · pith:GQWURS5Lnew · submitted 2000-05-03 · 🧮 math.CV · math.CA

Simultaneous approximation and interpolation of functions on continua in the complex plane

classification 🧮 math.CV math.CA
keywords alphaapproximationcomplexfunctionsplanepolynomialanalyticapproximating
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We construct polynomial approximations of Dzjadyk type (in terms of the k-th modulus of continuity, $k \ge 1$) for analytic functions defined on a continuum E in the complex plane, which simultaneously interpolate at given points of E. Furthermore, the error in this approximation is decaying as $e^{-cn^\alpha}$ strictly inside E, where c and $\alpha$ are positive constants independent of the degree n of the approximating polynomial.

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