Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalized Heisenberg Model   We consider the XXZ model for a chain of particles whose spins are arbitrary
with the anisotropy parameter equal to the root of minus one and generalized
periodic boundary conditions. The conditions for the truncation of the
functional fusion relations of the transfer matrices are obtained. The
truncation results in a closed system of equations whose solution allows
obtaining the energy spectrum.

34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
16
The categories of this paper are: stat
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
1
The categories of this paper are: cs
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The categories of this paper are: adap-org