Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: d-Orthogonal polynomials and su(2)   Two families of d-orthogonal polynomials related to su(2) are identified and
studied. The algebraic setting allows their full characterization (explicit
expressions, recurrence relations, difference equations, generating functions,
etc.) of those polynomials. In the limit where su(2) contracts to the
Heisenberg-Weyl algebra h_1, these polynomials tend to the standard Meixner
polynomials and d-Charlier polynomials, respectively.

11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics