Differential subordination defined by new generalised derivative operator for analytic functions
Summary: A new generalised derivative operator \(\mu^{n,m}_{\lambda_1\lambda 2}\) is introduced. This operator generalises many well-known operators studied earlier by many authors. Using the technique of differential subordination, we study some of the properties of differential subordination. In addition we investigate several interesting properties of the new generalised derivative operator.
scientific article; zbMATH DE number 5695247
scientific article