Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mean values of divisors twisted by quadratic characters   In this paper, we evaluate the sum $\sum_{m,n}\leg {m}{n}d(n)$, where $\leg
{m}{n}$ is the Kronecker symbol and $d(n)$ is the divisor function.

16
The categories of this paper are: stat
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga