Some characterizations of Bertrand offsets of timelike ruled surfaces
Abstract
In this paper, we study Bertrand offsets of timelike ruled surface by considering dual geodesic trihedron (dual Darboux frame) of the timelike ruled surfaces. We give the relationships between invariants of a timelike ruled surface and its Bertrand offset. Furthermore, we obtain conditions for these surface offsets to be developable. © 2011 Institute of Advanced Scientic Research.