Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On certain isomorphisms between absolute Galois groups   Let $k$ be an algebraically closed field of characteristic zero, $F$ be an
algebraically closed extension of $k$ of transcendence degree one, and $G$ be
the group of automorphisms over $k$ of the field $F$. The purpose of this note
is to calculate the group of continuous automorphisms of $G$.

5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex