On a certain subclass of analytic functions defined by a differential operator

B. Venkateswarlu, P. Thirupathi Reddy, Chao Meng, G. Swapna

In this work, we introduce and investigate a new class k-ŨS_s^m(λ, γ, t) of analytic functions in the open unit disc U with negative coefficients. The object of the present paper is to determine coefficient estimates, neighborhoods and partial sums for functions f belonging