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arxiv: math/0605121 · v1 · submitted 2006-05-04 · 🧮 math.CA

A uniqueness result on boundary interpolation

classification 🧮 math.CA
keywords boundaryfiniteanalyticbehaviorblaschkeconditionsdiskfunction
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Let $f$ be an analytic function mapping the unit disk $\D$ to itself. We give necessary and sufficient conditions on the local behavior of $f$ near a finite set of boundary points that requires $f$ to be a finite Blaschke product.

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