Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Isometric immersions into the Minkowski spacetime for Lorentzian
  manifolds with limited regularity   Assuming minimal regularity assumptions on the data, we revisit the classical
problem of finding isometric immersions into the Minkowski spacetime for
hypersurfaces of a Lorentzian manifold. Our approach encompasses metrics having
Sobolev regularity and Riemann curvature defined in the distributional sense,
only. It applies to timelike, spacelike, or null hypersurfaces with arbitrary
signature that possibly changes from point to point.

26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
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
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga