Abstract
Letf(t, z)=z+tω(1/z) be schlicht for ⋎z⋎>1, ω(z) = Σ = 0/∞ n a n z n,t>0. The paper considers first-order estimates for the dilatation of extremal quasiconformal extensions off ast→0.
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This work was initiated during the Special Year in Complex Analysis at the Technion, and was supported in parts by the Samuel Neaman Fund, the Forschungsinstitut für Mathematik, ETH, Zürich, and the National Science Foundation.
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Reich, E. On extremal quasiconformal extensions of conformal mappings. Israel J. Math. 28, 91–97 (1977). https://doi.org/10.1007/BF02759783
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DOI: https://doi.org/10.1007/BF02759783