On coefficient estimate of K-fold bi-univalent functions
Abstract
This study examines and investigates two novel subclasses โณ๐ฮฃ๐(ัฒ, า, ฮท; ฮด) and โณ๐~ฮฃ๐(ฮธ, า, ฮท; ฯ) for a family ฮฃ๐ of K-fold symmetric bi-univalent function in a open unit disk. Furthermore, where function in these subclasses, bound of coefficient |๐ท๐โ๐| and |๐ท๐๐โ๐| were derived. Moreover, several refined results are presented for related classes.
Fields of Study & Subjects
Analytic and geometric function theory
Holomorphic and Operator Theory
Approximation Theory and Sequence Spaces
Publication details
- Journal / source
- Journal of Interdisciplinary Mathematics
- Volume
- 29
- Issue
- 2
- Pages
- 413โ421
- Publication date
- 1 January 2026
- Language
- EN