*Department of Mathematics, Suleyman Demirel University, 32260, Isparta, Turkey. e-mail: ceylan@fef.sdu.edu.tr, unver@fef.sdu.edu.tr
**Department of Mathematics, Eskisehir Osmangazi University, 26480, Eskisehir, Turkey. e-mail: cekici@ogu.edu.tr
ABSTRACT
In this paper, we study parallel timelike ruled surfaces with timelike rulings by means of dual timelike vector fields depending on one real parameter. We obtain geometric invariants of the parallel timelike ruled surface with a timelike ruling in terms of those of the main surface.
Keywords: Parallel surfaces; ruled surfaces; timelike surfaces.
AMS Subject Classifications: 53A05; 53A17; 53B30