Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Heterogeneity and strong competition in ecology   We study a competition-diffusion model while performing simultaneous
homogenization and strong competition limits. The limit problem is shown to be
a Stefan type evolution equation with effective coefficients. We also perform
some numerical simulations in one and two spatial dimensions that suggest that
oscillations are detrimental to invasion behaviour of the species.

17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
18
The categories of this paper are: econ