Coefficient estimates for subclass of analytic and bi-univalent functions defined by differential operatorS. Hajiparvaneh, A. Zireh
In this paper, we introduce and investigate a subclass
of analytic and
bi-univalent
functions in the open unit disk U.
Upper bounds for the second and third
coefficients of functions in this subclass are founded.
Our results, which are presented in this paper, generalize and improve those in related works of several earlier authors.
Tbilisi Mathematical Journal, Vol. 10(2) (2017), pp. 91-102 |