Singularity Properties of Timelike Sweeping Surface in Minkowski 3-Space

In this paper, we give the parametric equation of the Bishop frame for a timelike sweeping surface with a unit speed timelike curve in Minkowski 3-space. We introduce a new geometric invariant to explain the geometric properties and local singularities of this timelike surface. We derive the suffici...

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Bibliographic Details
Published inSymmetry (Basel) Vol. 14; no. 10; p. 1996
Main Authors Li, Yanlin, Nazra, Sahar H., Abdel-Baky, Rashad A.
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2022
Subjects
convexity
Euclidean space
Geometry
Interdisciplinary aspects
local singularities
Lorentzian height functions
Minkowski space
Parametric equations
Singularities
Sweeping
unfolding theory
Velocity
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Summary:In this paper, we give the parametric equation of the Bishop frame for a timelike sweeping surface with a unit speed timelike curve in Minkowski 3-space. We introduce a new geometric invariant to explain the geometric properties and local singularities of this timelike surface. We derive the sufficient and necessary conditions for this timelike surface to be a timelike developable ruled surface. Afterwards, we take advantage of singularity theory to give the classification of singularities of this timelike developable surface. Furthermore, we give some representative examples to show the applications of the theoretical results.
ISSN:2073-8994
2073-8994
DOI:10.3390/sym14101996