Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lax pair for SU(n) Hubbard model   For one dimensional SU(n) Hubbard model, a pair of Lax operators are derived,
which give a set of fundamental equations for the quantum inverse scattering
method under both periodic and open boundary conditions. This provides another
proof of the integrability of the model under periodic boundary condition.

6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph