Some Properties of Harmonic Functions Defined by Convolution
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In this paper, we introduce and study a comprehensive family of harmonic univalent functions which contains various well-known classes of harmonic univalent functions as well as many new ones. Also, we improve some results obtained by Frasin [3] and obtain coefficient bounds, distortion bounds and extreme points, convolution conditions and convex combination are also determined for functions in this family. It is worth mentioning that many of our results are either extensions or new approaches to those corresponding previously known results.
Abstract
In this paper, we introduce and study a comprehensive family of harmonic univalent functions which contains various well-known classes of harmonic univalent functions as well as many new ones. Also, we improve some results obtained by Frasin [3] and obtain coefficient bounds, distortion bounds and extreme points, convolution conditions and convex combination are also determined for functions in this family. It is worth mentioning that many of our results are either extensions or new approaches to those corresponding previously known results.
참고문헌 (8)
- Y. Avci, "On harmonic univalent mappings", Ann. Univ. Mariae Curie-Sklodowska Sect, 44, pp.1~7 (1990)
- J. Clunie, "Harmonic univalent functions", Ann. Acad. Sci. Fenn. Ser.AI Math, 9, pp.3~25 (1984)
- B. A. Frasin, "Comprehensive family of harmonic univalent functions", SUT Journal of Mathematics, 42(1), pp.145~155 (2006)
- J. M. Jahangiri, "Harmonic functions starlike in the unit disc", J. Math. Anal. Appl, 235, pp.470~477 (1999)
- M. ¨ Ozt¨urk, "Convex subclass of harmonic starlike functions", Appl. Math. Comput, 154, pp.449~459 (2004)
- H. Silverman, "Univalent functions with negative coefficients", Proc. Amer. Math. Soc, 51, pp.109~116 (1975)
- H. Silverman, "Harmonic univalent function with negative coefficients", J. Math. Anal. Appl, 220, pp.283~289 (1998)
- H. Silverman, "Subclasses of Harmonic univalent functions", New Zealand. J. Math, 28, pp.275~284 (1999)
