= Evolution of cooperation by multilevel selection by Arne Traulsen and Martin A. Nowak
{c}
{tag=Work by Arne Traulsen}
{title2=2006}
By <Arne Traulsen> and <Martin A. Nowak>. PNAS 103(29), 10952–10955 (18 July 2006), DOI https://doi.org/10.1073/pnas.0602530103
https://pubmed.ncbi.nlm.nih.gov/16829575/
Original paper: https://dash.harvard.edu/bitstreams/9473ec8f-4d25-4d08-89ba-6eb725093f5e/download
Abstract and Figure 1: reproduction within groups, splitting at a size threshold and elimination of another group. The simplified threshold assumes weak selection, rare splitting and many groups.
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