Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Deep-Inelastic Structure Functions of $\pi$ and $\rho$ Mesons   We compute the lower moments of the structure functions of $\pi$ and $\rho$.
Of particular interest are the spin-dependent structure functions of the $\rho$
as they give new information about quark binding effects.

9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex