Conformal mapping and ellipses

Research output: Contribution to journalArticlepeer-review


We answer a question raised by M. Chuaqui, P. Duren, and B. Osgood by showing that a conformal mapping of a simply connected domain cannot take two circles onto two proper ellipses.

Original languageEnglish
Pages (from-to)3507-3513
Number of pages7
JournalProceedings of the American Mathematical Society
Issue number12
StatePublished - Dec 2006


  • Conformal mapping
  • Ellipse

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