Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sobre un contraejemplo a la conjetura de Hirsch   This is an expository paper (in Spanish) describing the origin and history of
the Hirsch Conjecture about the maximum diameter of graphs of polytopes, and
the ideas that led to the counter-example to it recently announced by the
author in arxiv:1006.2814

33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol