English

Generalized Bishop frames of regular time-like curves in 4-dimensional Lorentz space $\mathbb{L}^{4}$

Differential Geometry 2025-10-13 v1

Abstract

We introduced generalized Bishop frames on curves in 4-dimensional Euclidean space E4\mathbb{E}^{4}, which are orthonormal frames such that the derivatives of the vectors of the frames along the curve can be expressed, via a certain matrix, as a linear combination of the vectors of the frame. In relation to that, we study generalized Bishop frames of regular time-like curves. In a previous work, we showed that there is a hierarchy among different types of generalized Bishop frames for regular curves in the Euclidean space. Building upon this study, we further investigate it in the 4-dimensional Lorentz space L4\mathbb{L}^4. There are four types of generalized Bishop frames of regular time-like curves in L4\mathbb{L}^{4} up to the change of the order of vectors fixing the first one which is the tangent vector. Unlike other types of curves, such as light-like and space-like ones, the time-like curve can be investigated in a manner analogous to the Euclidean case. We find that a hierarchy of frames exists, similar to that in the Euclidean setting. Based on this hierarchy, we propose a new classification of curves.

Keywords

Cite

@article{arxiv.2510.09345,
  title  = {Generalized Bishop frames of regular time-like curves in 4-dimensional Lorentz space $\mathbb{L}^{4}$},
  author = {Subaru Nomoto},
  journal= {arXiv preprint arXiv:2510.09345},
  year   = {2025}
}

Comments

10 pages

R2 v1 2026-07-01T06:29:22.036Z