Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Euler system for characters over an imaginary biquadratic field   Given a pair of modular forms with complex multiplication by distinct
imaginary quadratic fields, the four dimensional Galois representation
associated to their Rankin--Selberg convolution is induced from a character
over an imaginary biquadratic field $F$. Using the Euler system of Lei,
Loeffler and Zerbes we bound a Selmer group associated to this character, over
the unique $\mathbb{Z}_{p}^{3}$-extension of $F$.

37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an