Nevanlinna-Pick interpolation by rational functions with a single pole inside the unit disk |
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Authors: | Tengyao Wang Joshua M. Weiss |
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Affiliation: | a Department of Mathematics, Princeton University, Princeton, NJ, USAb Department of Mathematics, Haverford College, Haverford, PA, USA |
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Abstract: | We devise an efficient algorithm that, given points z1,…,zk in the open unit disk D and a set of complex numbers {fi,0,fi,1,…,fi,ni−1} assigned to each zi, produces a rational function f with a single (multiple) pole in D, such that f is bounded on the unit circle by a predetermined positive number, and its Taylor expansion at zi has fi,0,fi,1,…,fi,ni−1 as its first ni coefficients. |
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Keywords: | 65E05 30E05 |
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