Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalized Gelation Theory describes Human Online Aggregation in
  support of Extremism   Though many aggregation theories exist for physical, chemical and biological
systems, they do not account for the significant heterogeneity found, for
example, in populations of living objects. This is unfortunate since
understanding how heterogeneous individuals come together in support of an
extremist cause, for example, represents an urgent societal problem. Here we
develop such a theory and show that the intrinsic population heterogeneity can
significantly delay the gel transition point and change the gel's growth rate.
We apply our theory to examine how humans aggregate online in support of a
particular extremist cause. We show that the theory provides an accurate
description of the online extremist support for ISIS (so-called Islamic State)
which started in late 2014.

14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas