The Argument Principle for Harmonic Functions

DOI10.2307/2974933zbMath0863.31001OpenAlexW4232362231MaRDI QIDQ4886435

Peter Duren, Walter Hengartner, Richard Snyder Laugesen

Publication date: 15 June 1997

Published in: The American Mathematical Monthly (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2307/2974933

zbMATH Keywords

harmonic functionsense-preserving functionsorders of the zerossense-reversing functions

Mathematics Subject Classification ID

Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.) (30C45) Harmonic, subharmonic, superharmonic functions in two dimensions (31A05) General theory of univalent and multivalent functions of one complex variable (30C55)

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