Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transition between extinction and blow-up in a generalized Fisher-KPP
  model   Stationary solutions of the Fisher-KPP equation with general nonlinear
diffusion and arbitrary reactional kinetic orders terms are characterized. Such
stationary (separatrix-like) solutions disjoint the blow-up solutions from
those showing extinction. In addition a criterion for general parameter values
is presented, which allows determining the blow-up or vanishing character of
the solutions.

35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga