Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the implementation of CVC in weak charged-current proton-neutron
  transitions   It is shown that the standard expression of the vector part of the hadronic
matrix element in weak charged-current proton-neutron transitions is in
agreement with the CVC hypothesis, contrary to a different claim in a recent
paper.

19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
18
The categories of this paper are: econ