Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of Ferrimagnetism in the Hubbard Model on Bipartite Lattices with
  Spectrum Symmetry   In this paper we developed theory of the ferrimagnetism in the Hubbard model
on bipartite lattices with spectrum symmetry. We then study the defect-induced
ferrimagnetic orders in three models and explored the universal features.

24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ