Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: G_2-structures with torsion from half-integrable nilmanifolds   The equations for a G_2-structure with torsion on a product M^7 = N^6 x S^1
are studied in relation to the induced SU(3)-structure on N^6. All solutions
are found in the case when the Lee-form of the G_2-structure is non-zero and
N^6 is a six-dimensional nilmanifold with half-integrable SU(3)-structure.
Special properties of the torsion of these solutions are discussed.

0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex