Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extended vertex operator algebras and monomial bases   We present a vertex operator algebra which is an extension of the level $k$
vertex operator algebra for the $\hat{sl}_2$ conformal field theory. We
construct monomial basis of its irreducible representations.

19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys