Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A topological pinching for the injectivity radius of a compact surface
  in S^3 and in H^3   It is given a topological pinching for the injectivity radius of a compact
embedded surface either in the sphere or in the hyperbolic space

6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess