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A note on the functions that preserve harmonicity in the plane - MaRDI portal

A note on the functions that preserve harmonicity in the plane (Q1057398)

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scientific article; zbMATH DE number 3897320
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A note on the functions that preserve harmonicity in the plane
scientific article; zbMATH DE number 3897320

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    A note on the functions that preserve harmonicity in the plane (English)
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    1984
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    The main result is the following theorem: Let A and B be open sets in the complex plane and let \(f: A\to B\). Then a necessary and sufficient condition for f to preserve harmonicity is that in each connected component of A either f or \(\bar f\) is holomorphic.
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    preserve harmonicity
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    holomorphic
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