Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal coverings of Lie tori (A finite presentation)   Using the well-known recognition and structural theorem(s) for root-graded
Lie algebras and their universal coverings, we give a finite presentation for
the universal covering algebra of a centerless Lie torus of type
$X\not=A,C,BC$. We follow a unified approach for the types under consideration.

23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
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The categories of this paper are: funct-an
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The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: q-fin