Some Characterizations of the Lorentzian Spherical Timeline and Null Curves
Miroslava Petrović-Torgašev, Emilija Šućurović
In [5] and [6] the authors have characterized the Lorentzian
spherical spacelike curves in the Minkowski $3$-space $E_1^3$. In this paper,
we shall characterize the Lorentzian spherical timelike and null curves
in the same space.