Parallel frame of non-lightlike curves in Minkowski space-time

The main purpose of this paper is to investigate parallel frames of non-lightlike curves in Minkowski space-time. For this purpose, the relations between Frenet-Serret frame and parallel frame of a given non-lightlike curve are discussed in four different cases. Then, the curvature, first and second torsion functions kappa(s), tau( s), sigma( s) and principal curvature functions k(1)( s), k(2)( s), k(3)( s) are expressed in terms of the angles alpha, beta and theta.