Univalent α-Spiral Functions
Univalent α-Spiral Functions
Suppose ƒ is regular in the open unit disk Δ, |z| < 1, and has a simple zero at the origin and no other zeros. Špaček (15) essentially showed that ƒ is univalent in Δ if and only if such that 0 < r < 1 and 0 < t …