{ "id": "1504.03191", "version": "v1", "published": "2015-04-13T14:08:04.000Z", "updated": "2015-04-13T14:08:04.000Z", "title": "Cohomology with twisted coefficients of the classifying space of a fusion system", "authors": [ "Rémi Molinier" ], "comment": "26 pages", "categories": [ "math.AT", "math.GR" ], "abstract": "We study the cohomology with twisted coefficients of the geometric realization of a linking system associated to a saturated fusion system $\\mathcal{F}$. More precisely, we extend a result due to Broto, Levi and Oliver to twisted coefficients. We generalize the notion of $\\mathcal{F}$-stable elements to $\\mathcal{F}^c$-stable elements in a setting of twisted coefficient cohomology and we show that, if the coefficient module is nilpotent, then the cohomology of the geometric realization of a linking system can be computed by $\\mathcal{F}^c$-stable elements. As a corollary, we show that for any coefficient module, the cohomology of the classifying space of a $p$-local finite group can be computed by these $\\mathcal{F}^c$-stable elements.", "revisions": [ { "version": "v1", "updated": "2015-04-13T14:08:04.000Z" } ], "analyses": { "subjects": [ "55R40", "55N25", "55R35", "20J06", "20D20", "20J15" ], "keywords": [ "classifying space", "stable elements", "geometric realization", "coefficient module", "linking system" ], "note": { "typesetting": "TeX", "pages": 26, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv150403191M" } } }