Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Open Spin Chains and Quadratic Algebras   Algebraic framework for construction of a commuting set of operators that can
be interpreted as integrals of motion of the open spin chain with boundary
conditions and nearest neighbour interaction is investigated.

29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc