Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Faraday instability on a network   Faraday waves are generated at the air/liquid interface inside an array of
square cells. As the free surface inside each cell is destabilizing due to the
oscillations, the shape of the free surface is drastically changing. Depending
on the value of the frequency f of oscillations, different patterns are
observed inside each cell. For well defined f values, neighboring cells are
observed to interact and a general organization is noticed. In such a
situation, initially disordered structures lead to a general pattern covering
the entire liquid pool and a spatial order appears all over the cell array.
This abstract is related to a fluid dynamics video for the gallery of fluid
motion 2009.

37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph