On Null And Pseudo Null Mannheim Curves In Dual Lorentzian Space

In this paper, we give the definition of null Mannheim curves in dual Lorentzian space, and prove that there are no null Mannheim curves in dual Lorentzian space. Furthermore, we obtain that the pseudo null Mannheim curves in dual Lorentzian space are pseudo null straight lines and pseudo null circles whose Mannheim partner curves are pseudo null straight lines. Finally, we give some examples of pseudo null Mannheim curves in dual Lorentzian space.