FACTA UNIVERSITATIS-SERIES MATHEMATICS AND INFORMATICS, cilt.38, sa.2, ss.285-299, 2023 (ESCI)
Spirials are differentiable curves that meet all meridians of a rotational surface at a constant angle. In this study, we obtain differential equations of all spirals on hyperbolic oblate and Lorentzian prolate spheroids. Then we define the general parametrizations of spirals which are solutions of differential equations.