2008/05/14 by Craizer, Marcos
#14R99 #Differential Geometry (math.DG) #FOS: Mathematics
paper · doi:10.48550/arxiv.0805.2060
Asymptotic net is an important concept in discrete differential geometry. In this paper, we show that we can associate affine discrete geometric concepts to an arbitrary non-degenerate asymptotic net. These concepts include discrete affine area, mean curvature, normal and co-normal vector fields and cubic form, and they are related by structural and compatibility equations. We consider also the particular cases of affine minimal surfaces and affine spheres.