Coefficient Estimates for Meromorphic Bi-Univalent Functions

A univalent meromorphic function defined on $\Delta:= {z \in $\mathbb{C}$: 1<|z|<\infty }$withunivalentinversedefinedon$\Delta$ is bi-univalent meromorphic in $\mathrm{\Delta }$. For certain subclasses of meromorphic bi-univalent functions, estimates on the initial coefficients are obtained.