Position vectors of a timelike and a null helix in Minkowski 3-space

In this paper, we study the position vectors of a timelike and a null helix (or a W-curve), i.e. curve with constant curvatures in the Minkowski 3-space . We give some characterizations for timelike and null helix whose image lies on the Lorentzian sphere or pseudo-hyperbolical space by using the positions vectors of the curve.