Lorentzian Approximations and Gauss–Bonnet Theorem for E1,1 with the Second Lorentzian Metric

Haiming Liu, Xiawei Chen and Rafael López

Journal of Mathematics, 2022, vol. 2022, 1-12

Abstract: In this paper, we consider the Lorentzian approximations of rigid motions of the Minkowski plane EL21,1. By using the method of Lorentzian approximations, we define the notions of the intrinsic curvature for regular curves, the intrinsic geodesic curvature of regular curves on Lorentzian surface, and the intrinsic Gaussian curvature of Lorentzian surface in E1,1 with the second Lorentzian metric away from characteristic points. Furthermore, we derive the expressions of those curvatures and prove Gauss–Bonnet theorem for the Lorentzian surface in E1,1 with the second left-invariant Lorentzian metric g2.

Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jjmath:5402011

DOI: 10.1155/2022/5402011

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