Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phase transitions in some epidemic models defined on small-world
  networks   Some modified versions of susceptible-infected-recovered-susceptible (SIRS)
model are defined on small-world networks. Latency, incubation and variable
susceptibility are included, separately. Phase transitions in these models are
studied. Then inhomogeneous models are introduced. In some cases, the
application of the models to small-world networks is shown to increase the
epidemic region.

23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin