Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parton Distributions of the Virtual Photon   We propose a generic ansatz for the extension of parton distributions of the
real photon to those of the virtual photon. Alternatives and approximations are
studied that allow closed-form parametrizations.

33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph