Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Apex predator and the cyclic competition in a rock-paper-scissors game
  of three species   This work deals with the effects of an apex predator on the cyclic
competition among three distinct species that follow the rules of the
rock-paper-scissors game. The investigation develops standard stochastic
simulations but is motivated by a novel procedure which is explained in the
work. We add the apex predator as the fourth species in the system that
contains three species that evolve following the standard rules of migration,
reproduction and predation, and study how the system evolves in this new
environment, in comparison with the case in the absence of the apex predator.
The results show that the apex predator engenders the tendency to spread
uniformly in the lattice, contributing to destroy the spiral patterns, keeping
biodiversity but diminishing the average size of the clusters of the species
that compete cyclically.

15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph