Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Number Operator Algebras and generalizations of supersymmetry   Several quantum systems have been used in the last few years to extend
supersymmetry. In this paper we show all this systems fit into the picture of
what we call "Number Operator Algebras".

35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
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The categories of this paper are: supr-con
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th