Evolutes of Fronts in de Sitter and Hyperbolic Spheres

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M. Khalifa Saad, H. S. Abdel-Aziz, A. A. Abdel-Salam


The evolute of a regular curve is a classical object from the viewpoint of differential geometry. We study some types of curves such as framed curves, framed immersion curves, frontal curves and front curves in 2-dimensional de Sitter and hyperbolic spaces. Also, we investigate the evolutes and some of their properties of fronts at singular points under some conditions. Finally, some computational examples in support of our main results are given and plotted.

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