{"paper":{"title":"Invasion by rare mutants in a spatial two-type Fisher-Wright system with selection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.PR","authors_text":"Andreas Greven, Donald A. Dawson","submitted_at":"2011-04-01T20:41:12Z","abstract_excerpt":"We consider a meanfield system of interacting Fisher-Wright diffusions with selection and rare mutation on the geographic space $\\{1,2,...,N\\}$. The type 1 has fitness 0, type 2 has fitness 1 and (rare) mutation occurs from type 1 to 2 at rate $m...N^{-1}$, selection is at rate $s>0$. The system starts in the state concentrated on type 1, the state of low fitness. We investigate this system for $N \\to \\infty$ on the original and large time scales.\n  We show that for some $\\alpha \\in (0,s)$ at times $\\alpha^{-1} \\log N+t, t \\in \\R, N \\to \\infty$ the emergence of type 2 (positive global type-2 i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.0253","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}