Копылов А. П.
Свойства отображений, близких к гармоническим. II
Продолжается изучение свойств отображений, близких к гармоническим
(ε-квазигармонических отображений с малыми значениями параметра
ε), начало которому положено в более ранних работах автора (см.,
например, [1–5]).
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Kopylov A. P.
Properties of the mappings that are close to the harmonic mappings.
II
We continue studying the mappings that are close to the harmonic mappings
(ε-quasiharmonic mappings with ε small). This study originates
with the previous articles of the author. The results of the article
include a theorem on connection between the notion of ε-quasiharmonic
mapping and the solutions to Beltrami systems, an analog to the arithmetic
mean property of harmonic functions for ε-quasiharmonic mappings,
a theorem on stability in the Poisson formula for harmonic mappings
in the ball, and a theorem on the local smoothing of ε-quasiharmonic
mappings with ε small which preserves proximity to the harmonic
mappings.
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