Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discussion: The Dantzig selector: Statistical estimation when $p$ is
  much larger than $n$   Discussion of ``The Dantzig selector: Statistical estimation when $p$ is much
larger than $n$'' [math/0506081]

31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int