In this paper we obtain, by the method of subordination chains, a sufficient condition for the analyticity and the univalence of the functions defined by an integral operator. In particular cases, I find the well-known conditions for univalency established by Ruscheweyh [7], Ahlfors [1], Becker [2],
✦ LIBER ✦
A generalization of Ehrenfeucht's irreducibility criterion
✍ Scribed by G Angermüller
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 213 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0022-314X
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Ä 4 of H rJ, which is easily determined, give a basis of ރ x, y rJ. ## 0 In case of a single characteristic exponent our algorithm is equivalent w x but not equal to the algorithm of 2 . An implementation of our algorithm in a Mathematica package has been written by J. Elias and the author. Th