Concentration of area in half-planes

Roger W. Barnard, Clint Richardson, Alexander Yu Solynin

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

For the standard class S of normalized univalent functions f analytic in the unit disk U, we consider a problem on the minimal area of the image f(U) concentrated in any given half-plane. This question is related to a well-known problem posed by A. W. Goodman in 1949 that regards minimizing area covered by analytic univalent functions under certain geometric constraints. An interesting aspect of this problem is the unexpected behavior of the candidates for extremal functions constructed via geometric considerations.

Original languageEnglish
Pages (from-to)2091-2099
Number of pages9
JournalProceedings of the American Mathematical Society
Volume133
Issue number7
DOIs
StatePublished - Jul 2005

Keywords

  • Local variation
  • Minimal area problem
  • Symmetrization
  • Univalent function

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