Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of interaction strength on the evolution of cooperation   Cooperative behaviors are ubiquitous in nature,which is a puzzle to
evolutionary biology,because the defector always gains more benefit than the
cooperator,thus,the cooperator should decrease and vanish over time.This
typical "prisoners' dilemma" phenomenon has been widely researched in recent
years.The interaction strength between cooperators and defectors is introduced
in this paper(in human society,it can be understood as the tolerance of
cooperators).We find that only when the maximum interaction strength is between
two critical values,the cooperator and defector can coexist,otherwise, 1) if it
is greater than the upper value,the cooperator will vanish, 2) if it is less
than the lower value,a bistable state will appear.

10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas