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Meromorphic and Multipoint Padé Approximants for Complex Cauchy Transforms with Polar Singularities
Laurent Baratchart 1, Maxim Yattselev 1
(2006)

We study the asymptotic pole distribution and the convergence in capacity of AAK-type meromorphic approximants as well as multipoint Padé approximants to functions of the form $$F(z)=\int\frac{d\mes(t)}{z-t}+R(z),$$ where $R$ is a rational function and $\mu$ a complex measure with compact regular support included in $\R$, whose argument has bounded variation on the support.
1:  APICS (INRIA Sophia Antipolis)
INRIA
Mathematics/Classical Analysis and ODEs
meromorphic approximation – AAK-theory – rational approximation – Padé approximation – multipoint approximation – orthogonal polynomials – Hardy spaces – critical points
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