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

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  • Haiming Liu
  • Xiawei Chen
  • Rafael López

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.

Suggested Citation

  • Haiming Liu & Xiawei Chen & Rafael López, 2022. "Lorentzian Approximations and Gauss–Bonnet Theorem for E1,1 with the Second Lorentzian Metric," Journal of Mathematics, Hindawi, vol. 2022, pages 1-12, October.
  • Handle: RePEc:hin:jjmath:5402011
    DOI: 10.1155/2022/5402011
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