Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Central extensions of loop groups and obstruction to pre-quantization   An explicit construction of a pre-quantum line bundle for the moduli space of
flat G-bundles over a Riemann surface is given, where G is any non-simply
connected compact simple Lie group. This work helps to explain a curious
coincidence previously observed between Toledano-Laredo's work classifying
central extensions of loop groups LG and the author's previous work on the
obstruction to pre-quantization of the moduli space of flat G-bundles.

1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
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The categories of this paper are: cond-mat
16
The categories of this paper are: stat
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg