Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A generalization of contact metric manifolds   We give a characterization of a contact metric manifold as a special almost
contact metric manifold and discuss an almost contact metric manifold which is
{a} natural generalization of the contact metric manifolds introduced by Y.
Tashiro.

17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph