Radius problems associated with pre-Schwarzian and Schwarzian derivatives
نویسندگان
چکیده
منابع مشابه
Schwarzian derivatives and uniformization
In every textbook on elementary function theory you can find a definition of Schwarzian derivative {z; x} = 1 2 z z − 1 4 z z 2 , where = d/dx, of a non-constant function z = z(x) with respect to x. You would also find an exercise to show (0.1) [PGL(2)-invariance] If a, b, c, and d are constants satisfying ad − bc = 0, then az + b cz + d ; x = {z; x}. (0.2) {z; x} = 0 if and only if z(x) = (ax ...
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ژورنال
عنوان ژورنال: Analysis
سال: 2014
ISSN: 0174-4747,2196-6753
DOI: 10.1515/anly-2012-1219