TY - JOUR TI - Coefficients bounds for a subclass of bi-univalent functions defined by Al-Oboudi differential operator AU - Uyanik Neslihan AU - Gokkurt Burcin Ozdemir JN - Thermal Science PY - 2022 VL - 26 IS - 102 SP - 583 EP - 589 PT - Article AB - In this paper, we investigate a new subclass Σnδ(λ,γ,φ)of analytic and bi-univalent functions in the open unit disk U ={z:|z|<1} defined by Al-Oboudi differential operator. We obtain coefficient bounds and for functions belonging to subclass Σnδ(λ,γ,φ). Relevant connections of the results presented here with various well-known results are briefly indicated.