Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Internet websites statistics expressed in the framework of the
  Ursell-Mayer cluster formalism   We show that it is possible to generalize the Ursell-Mayer cluster formalism
so that it may cover also the statistics of Internet websites. Our starting
point is the introduction of an extra variable that is assumed to take account,
as will be explained, of the nature of the Internet statistics. We then show,
following the arguments in Mayer, that one may obtain a phase transition-like
phenomena

17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int