Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-Regulation in Infinite Populations with Fission-Death Dynamics   The evolution of an infinite population of interacting point entities placed
in $\mathbb{R}^d$ is studied. The elementary evolutionary acts are death of an
entity with rate that includes a competition term and independent fission into
two entities. The population states are probability measures on the
corresponding configuration space and the result is the construction of the
evolution of states in the class of sub-Poissonian measures, that corresponds
to the lack of clusters in such states. This is considered as a self-regulation
in the population due to competition.

18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga