Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-instantons and superstring solitons   Multi-instanton solutions in the eight and seven dimensional Yang-Mills
fields theory is obtained. Extended-soliton solutions to the low-energy
heterotic-field-theory equations of motion is constructed from this
higher-dimensional multi-instantons.

29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc