Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Three-flavour effects and CP- and T-violation in neutrino oscillations   Some theoretical aspects of 3-flavour (3f) neutrino oscillations are
reviewed. These include: general properties of 3f oscillation probabilities;
matter effects in \nu_\mu \leftrightarrow \nu_\tau oscillations; 3f effects in
oscillations of solar, atmospheric, reactor and supernova neutrinos and in
accelerator long-baseline experiments; CP and T violation in neutrino
oscillations in vacuum and in matter, and the problem of U_{e3}.

7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ