Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Liouville-type result for non-cooperative Fisher--KPP systems and
  nonlocal equations in cylinders   We address the uniqueness of the nonzero stationary state for a
reaction-diffusion system of Fisher-KPP type that does not satisfy the
comparison principle. Although the uniqueness is false in general, it turns out
to be true under biologically natural assumptions on the parameters. This
Liouville-type result is then used to characterize the wake of traveling waves.
All results are extended to an analogous nonlocal reaction-diffusion equation
that contains as a particular case the cane toads equation with bounded traits.

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The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: physics
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: cs
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin