Recently obtained results about m-dimensional panharmonic functions, i.e., solutions to the modified Helmholtz equation, are presented in a systematic form. They concern various mean value properties. Their corollaries are considered along with converse and inverse of these properties, and relations between panharmonic and harmonic functions.
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To Vladimir Maz’ya, in remembrance of our collaboration
Translated from Problemy Matematicheskogo Analiza 120, 2023, pp. 51-69.
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Kuznetsov, N. Panharmonic Functions: Mean Value Properties and Related Topics. J Math Sci 269, 53–76 (2023). https://doi.org/10.1007/s10958-023-06254-y
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DOI: https://doi.org/10.1007/s10958-023-06254-y