Browsing by Author "Duren, P"
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- ItemEllipses, near ellipses, and harmonic Mobius transformations(2005) Chuaqui, M; Duren, P; Osgood, BIt is shown that an analytic function taking circles to ellipses must be a Mobius transformation. It then follows that a harmonic mapping taking circles to ellipses is a harmonic Mobius transformation.
- ItemThe Schwarzian derivative for harmonic mappings(2003) Chuaqui, M; Duren, P; Osgood, B