Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Domino effect for world market fluctuations   In order to emphasize cross-correlations for fluctuations in major market
places, series of up and down spins are built from financial data. Patterns
frequencies are measured, and statistical tests performed. Strong
cross-correlations are emphasized, proving that market moves are collective
behaviors.

14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: eess
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg