Open AccessCoefficient estimates for a new subclass of analytic and bi-univalent functions by Hadamard product
Author(s) -
Ebrahim Analouei Adegani,
Ahmad Zireh,
Mostafa Jafari
Publication year - 2021
Publication title -
boletim da sociedade paranaense de matemática
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.347
H-Index - 15
eISSN - 2175-1188
pISSN - 0037-8712
DOI - 10.5269/bspm.39164
Subject(s) - subclass , hadamard product , hadamard three lines theorem , hadamard transform , unit disk , product (mathematics) , hadamard three circle theorem , mathematics , analytic function , unit (ring theory) , pure mathematics , combinatorics , discrete mathematics , mathematical analysis , geometry , mathematics education , antibody , immunology , biology
In this work, we introduce a new subclas of bi-univalent functions which is defined by Hadamard product andsubordination in the open unit disk. and find upper bounds for the second and third coefficients for functions in this new subclass. Further, we generalize and improve some of the previously published results.