Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On holonomy of Weyl connections in Lorentzian signature   Holonomy algebras of Weyl connections in Lorentzian signature are classified.
In particular, examples of Weyl connections with all possible holonomy algebras
are constructed.

17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga