Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some observations about super Catalan numbers, corresponding orthogonal
  polynomials, and their q-analogues   In this note we give a survey about polynomials whose moments are multiples
of super Catalan numbers and explore two different kinds of q-analogues.

8
The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
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The categories of this paper are: nlin
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs