New subclasses of meromorphic bi-univalent functions by associated with ‎subordinate

In the present paper, we define two subclasses Σ(λ,α,β), ΣC(α,β) of meromorphic univalent functions and subclass ΣB,C(α,β,λ) of meromorphic bi-univalent functions. Furthermore, we obtain estimates on the general coefficients |bn| (n≥1) for functions in the subclasses Σ(λ,α,β), ΣC(α,β) and estimates for the early coefficients of functions in subclass ΣB,C(α,β,λ) by associated subordination. The results obtained in this paper would generalize and improve those in related works of several earlier authors