Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CP and T Violation in KL -> pi^+pi^-e^+e^-   I will here make some brief comments on the T- and CP- odd asymmetry observed
by KTeV in the KL -> pi^+pi^-e^+e^- decay.

23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin