Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Factorizacion of the hypergeometric-type difference equation on the
  uniform lattice   We discuss factorization of the hypergeometric-type difference equations on
the uniform lattices and show how one can construct a dynamical algebra, which
corresponds to each of these equations. Some examples are exhibited, in
particular, we show that several models of discrete harmonic oscillators,
previously considered in a number of publications, can be treated in a unified
form.

20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: eess
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con