Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Virtual Domination of $3$-manifolds   For any closed oriented hyperbolic $3$-manifold $M$, and any closed oriented
$3$-manifold $N$, we will show that $M$ admits a finite cover $M'$, such that
there exists a degree-$2$ map $f:M'\rightarrow N$, i.e. $M$ virtually
$2$-dominates $N$.

21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int