Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Maximal rank root subsystems of hyperbolic root systems   A Kac-Moody algebra is called hyperbolic if it corresponds to a generalized
Cartan matrix of hyperbolic type. We study root subsystems of root systems of
hyperbolic algebras. In this paper, we classify maximal rank regular hyperbolic
subalgebras of hyperbolic Kac-Moody algebras.

22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio