Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Recurrent Rotor-Router Configuration in Z^3   Rotor Router models were first introduced by James Propp in 2002. A recurrent
Rotor configuration is the one in which every state is visited infinitely
often. In this project we investigated whether there is a recurrent Rotor
configuration in Z^d (d>2).

1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph