Journal of Mathematics (Jan 2021)

On q-ANALOGUE of Differential Subordination Associated with Lemniscate of Bernoulli

  • Mohsan Raza,
  • Hira Naz,
  • Sarfraz Nawaz Malik,
  • Sahidul Islam

DOI
https://doi.org/10.1155/2021/5353372
Journal volume & issue
Vol. 2021

Abstract

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This article comprises the study of differential subordination with analogue of q-derivative. It includes the sufficient condition on γ for 1+γ∂zqhz/hnz to be subordinated by 1+Az/1+Bz, −1≤B<A≤1, and implies that hz≺1+z, where hz is the analytic function in the open unit disk. Moreover, certain sufficient conditions for q-starlikeness of analytic functions related with lemniscate of Bernoulli are determined.