Admissible Classes of Multivalent Meromorphic Functions Defined by a Linear Operator

The results from this paper are related to the geometric function theory. In order obtain them, we use technique based on differential subordination, one of newest techniques used in field, also known as admissible functions. For that, appropriate classes functions first defined. Based these classes, some subordination and superordination for multivalent meromorphic functions, analytic punctured unit disc, a linear operator ℑρ,τp(ν), τ>0,ν,ρ∈C, such that Re(ρ−ν)≧0, Re(ν)>τp,(p∈N). Moreover, taking into account both results, derive sandwich-type theorem. connection with other an example provided.