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math.DG2022
On surfaces obtained as singular loci of normal congruences of frontals with pure-frontal singular points
Samuel P. dos Santos, Keisuke Teramoto
We study singularities and geometric properties of surfaces given by the singular loci of normal congruence of frontals with pure-frontal singular points. These surfaces consist of…
math.DG2022★ 3 cited
Boundedness of geometric invariants near a singularity which is a suspension of a singular curve
Luciana F. Martins, Kentaro Saji, Samuel P. dos Santos +1
Near a singular point of a surface or a curve, geometric invariants diverge in general, and the orders of diverge, in particular the boundedness about these invariants represent ge…