Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Recent Progress in Understanding Quark and Gluon Distribution Functions
  for Large Nuclei at Small x   I discuss the problem of computing the structure functions for very heavy
nuclei at small Bjorken x. The approximations used in this description are
physically motivated, and recent computations reviewed.

2
The categories of this paper are: math
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci