Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4633487 | Applied Mathematics and Computation | 2009 | 5 Pages |
Abstract
Let SLâ denote the class of all analytic functions f in the unit disc U with the normalization f(0)=fâ²(0)-1=0 and satisfying the conditionzfâ²(z)/f(z)2-1<1,zâU,thus zfâ²(z)/f(z) is in the interior of the right half of the lemniscate of Bernoulli (x2+y2)2-2(x2-y2)=0. The relations between SLâ and others classes geometrically defined are considered. The radii of α-convexity, of α-starlikeness (and some of others) of fâSLâ are determined.
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
Janusz SokóÅ,