SOME SUBCLASSES OF ANALYTIC FUNCTIONS WITH
NEGATIVE COEFFICIENTS FOR OPERATORS
ON HILBERT SPACE
Yong Chan Kim1, Jae Ho Choi2 1Department of Mathematics Education
Yeungnam University, Gyongsan 38541, KOREA 2Department of Mathematics Education
Daegu National University of Education
219 Jungangdaero, Namgu, Daegu 42411, KOREA
The main object of the present paper is to investigate some results concerning a sufficient and necessary condition, coefficient estimates and distortion theorem for the class
. Furthermore, some applications of the fractional calculus for operator on Hilbert space are also considered.
You will need Adobe Acrobat reader. For more information and free download of the reader, please follow this link.
References
[1] J.W. Alexander, Functions which map the interior of the unit circle upon simple regions, Ann. Math. Ser. 2, 17 (1915), 12-22.
[2] N. Dunford and J.T. Schwarz, Linear Operators, Part I, General Theory, Interscience, New York (1958). SOME SUBCLASSES OF ANALYTIC FUNCTIONS WITH... 561
[3] K. Fan, Julia’s lemma for operators, Math. Ann., 239 (1979), 241-245.
[4] C. Ferreira and J.L. Lopez, Asymptotic expansions of the Hurwitz-Lerch Zeta function, J. Math. Anal. Appl., 298 (2004), 210-224.
[5] T.M. Flett, The dual of an inequality of Hardy and Littlewood and some related inequalities, J. Math. Anal. Appl., 38 (1972), 746-765.
[6] I.B. Jung, Y.C. Kim and H.M. Srivastava, The Hardy space of analytic functions associated with certain one-parameter families of integral operators, J. Math. Anal. Appl., 176 (1993), 138-147.
[7] Y.C. Kim, J.H. Choi, and J.S. Lee, Generalized fractional calculus to a subclass of analytic functions for operators on Hilbert space, Internat. J. Math. and Math. Sci., 21 (1998), 671-676.
[8] J.L. Liu, Sufficient conditions for strongly starlike functions involving the generalized Srivastava-Attiya operator, Integral Transforms Spec. Funct., 22 (2011), 79-90.
[9] S.D. Lin, H.M. Srivastava and P.Y. Wang, Some expansion formulas for a class of generalized Hurwitz-Lerch Zeta functions, Integral Transforms Spec. Funct., 17 (2006), 817-827.
[10] G. Murugusundaramoorthy, Subordination results for spiral-like functions associated with the Srivastava-Attiya operator, Integral Transforms Spec. Funct., 23 (2012), 97-103.
[11] S. Owa, M. Saigo and H.M. Srivastava, Some characterization theorems for starlike and convex functions involving a certain fractional integral operator, J. Math. Anal. Appl., 140 (1989), 419-426.
[12] G.S. Sˇalˇagean, Subclasses of univalent functions, In: Lecture Notes in Mathematics, Vol. 1013, Springer, Berlin (1983), 362-372.
[13] H. Silverman, Univalent functions with negative coefficients, Proc. Amer. Math. Soc., 51 (1975), 109-116.
[14] H.M. Srivastava and A.A. Attiya, An integral operator associated with thw Hurwitz-Lerch Zeta function and differential subordination, Integral Transforms Spec. Funct., 18 (2007), 207-216.
[15] H.M. Srivastava and J. Choi, Series Associated with the Zeta and Related Function, Kluwer Academic Publishers, Dordrecht (2001). 562 Y.C. Kim, J.H. Choi
[16] H.M. Srivastava, D. Jankov, T.K. Pog´any and R.K. Saxena, Two-side inequalities for the extended Hurwitz-Lerch Zeta function, Comput. Math. Appl., 62 (2011), 516-522.
[17] H.M. Srivastava, M. Saigo and S. Owa, A class of distortion theorems involving certain operators of fractional calculus, J. Math. Anal. Appl., 131 (1988), 412-420.
[18] Y. Xiaopei, A subclass of analytic p-valent functions for operator on Hilbert space, Math. Japonica, 40 (1994), 303-308.
[19] S.M. Yuan and Z.M. Liu, Some properties of two subclasses of k-fold symmetric functions associated with Srivastava-Attiya operator, Appl. Math. Comput., 218 (2011), 1136-1141.
[20] Y. Yunus, A.B. Akbarally and S.A. Halim, Properties of a certain subclass of starlike functions defined by a generalized operator, Int. J. Appl. Math., 31, No 4 (2018), 597-611; DOI: 10.12732/ijam.v31i4.6.