Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Power Law Distribution of the Frequency of Demises of U.S Firms   Both theoretical and applied economics have a great deal to say about many
aspects of the firm, but the literature on the extinctions, or demises, of
firms is very sparse. We use a publicly available data base covering some 6
million firms in the US and show that the underlying statistical distribution
which characterises the frequency of firm demises - the disappearances of firms
as autonomous entities - is closely approximated by a power law. The exponent
of the power law is, intriguingly, close to that reported in the literature on
the extinction of biological species.

30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-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
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph