Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Poisson structures for lifts and periodic reductions of integrable
  lattice equations   We introduce and study suitable Poisson structures for four dimensional maps
derived as lifts and specific periodic reductions of integrable lattice
equations. These maps are Poisson with respect to these structures and the
corresponding integrals are in involution.

33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc