Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2010 Nov 2;10:336. doi: 10.1186/1471-2148-10-336

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright ©2010 Boza and Számadó; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

PMC Copyright notice

Stable and instable fix points of the model and the position of the hysteresis point for different group sizes (n). Results from numerical and individual-based (IBM) simulations show the same results. Instable fix points (dashed line for numerical simulations, open red circles for IBM simulations) separate the interior stable fix points (thick lines for numerical and filled red circles for IBM simulations) and 0 cooperativeness in the system. a, Group size (n) is 5, the threshold values are (T) 5, 4, 3, 2, 1. b, the locations of the hysteresis points (i.e. the maximal cost where cooperation still can be a stable), with different group sizes (n). (♦: T = n-1; ▲: T = n/2).