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Distortion on properties of \(K\)-q.c. maps and a better estimate for Mori’s constant. (Chinese) Zbl 0778.30021
This paper gives: (i) a new distortion theorem of the argument for the \(K\)-q.c. maps; (ii) a Hölder continuous theorem of a class of \(K\)-q.c. maps \(K=(f\): \(f\) maps \(K\)-q.c. the unit disc into itself with fixed origin point). Using this theorem the author obtains an improvement of Mori’s constant; (iii) some new distortion theorems for \(K\)-q.c. maps.
Reviewer: Hu Ke (Nanchang)

MSC:
30C62 Quasiconformal mappings in the complex plane
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