Coefficient bounds for a generalized subclass of bounded turning functions associated with Sigmoid function
نویسندگان
1 Department of Mathematics, Khalsa College, Amritsar-143001, Punjab, India
2 Department of Mathematics, G.N.D.U. College, Chungh-143304, Tarn-Taran(Punjab), India
doi
10.22075/ijnaa.2023.29574.4195چکیده
In this paper, we introduce a subclass of analytic functions associated with the Sigmoid function and determine the upper bounds for various coefficient functionals such as Fekete-Szego functional, second Hankel determinant, Zalcman functional and third Hankel determinant. Also, the concept is extended to two-fold and three-fold symmetric functions. The results proved earlier, follow as special cases of the results of this paper.
