Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Behavior of torsion functions of spacelike curves in Lorentz-Minkowski
  space   In this paper, we introduce the pseudo-torsion functions along spacelike
curves whose curvature vector field has isolated lightlike points in
Lorentz-Minkowski 3-space, and prove the fundamental theorem. Moreover, we
analyze the behavior of the torsion function at such points. As a corollary, we
obtain a necessary and sufficient condition for real analytic spacelike curves
to be planar.

20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an