Mathematics – Complex Variables
Scientific paper
2010-12-14
Mathematics
Complex Variables
14 pages, 2 figures
Scientific paper
Concrete sharp constants in a pointwise estimate of the gradient of a
harmonic function in the unit disk are obtained under the assumption that
function belong to Hardy space $h^p$, $p\ge 1$. This generalizes some recent
result of Maz'ya & Kresin and a result of Colonna related to the Bloch constant
of harmonic mappings of the unit disk into itself.
Kalaj David
Markovic Marijan
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