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Yilmaz Tunçer, Murat Kemal Karacan and Dae Won Yoon

Abstract

In this study, non-null Frenet-Mannheim curves and non-null Weakened Mannheim curves are investigated in Minkowski 3-space. Some characterizations for this curves are obtained.

Open access

Murat Kemal Karacan, Dae Won Yoon and Nural Yuksel

Abstract

In this paper, we classify two types ruled surfaces in the three dimensional simply isotropic space I1 3 under the condition ∆xi= λixi where ∆ is the Laplace operator with respect to the first fundamental form and λ is a real number. We also give explicit forms of these surfaces.