Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Amplified endomorphisms of Fano fourfolds   Let $X$ be a smooth Fano fourfold admitting a conic bundle structure. We show
that $X$ is toric if and only if $X$ admits an amplified endomorphism; in this
case, $X$ is a rational variety.

23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess