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math.DG2011
Notes on Degenerate Curves in Pseudo-Euclidean Spaces of Index Two
Mehmet Göçmen, Sadık Keleş
In this paper we deal with curves with degeneration degree two in pseudo-Euclidean spaces of index two. We characterize Bertrand curves. We show a correspondence between the evolut…
math.DG2011★ 2 cited
-Null Bertrand Curves in Minkowski Spacetime
Mehmet Göçmen, Sadık Keleş
In this paper we study null Bertrand curves in under the assumption the curve has a Cartan frame. We show that if the derivative vectors of the null Cartan curve in $R_…
math.DG2008
Biharmonic curves on \textit{LP}-Sasakian manifolds
Sadık Keleş, Selcen Yüksel Perktaş, Erol Kılıç
In this paper we give necessary and sufficient conditions for spacelike and timelike curves in a conformally flat, quasi conformally flat and conformally symmetric 4-dimensional \t…