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arXiv · 1103.1030

Quasi-nearly subharmonic functions and quasiconformal mappings

Pekka Koskela·Vesna Manojlović
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Abstract

We prove that the composition of a quasi-nearly subharmonic function and a quasiregular mappings of bounded multiplicity is quasi-nearly subharmonic. Also, we prove that if $u\circ f$ is quasi-nearly subharmonic for all quasi-nearly subharmonic $u$ and $f$ satisfies some additional conditions, then $f$ is quasiconformal. Similar results are further established for the class of regularly oscillating functions.

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Pekka Koskela, Vesna Manojlović. 2011-03-05. Quasi-nearly subharmonic functions and quasiconformal mappings. https://arxiv.org/abs/1103.1030

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