Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Langlands Base Change for GL(2)   Let F be a totally real Galois number field. We prove the existence of base
change relative to the extension F/Q for every classical newform of odd level,
under simple local assumptions on the field F.

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The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th