{ "id": "1206.3368", "version": "v1", "published": "2012-06-15T04:30:43.000Z", "updated": "2012-06-15T04:30:43.000Z", "title": "A note on the homotopy type of the Alexander dual", "authors": [ "Elias Gabriel Minian", "Jorge Tomas Rodriguez" ], "comment": "6 pages", "categories": [ "math.AT", "math.CO" ], "abstract": "We investigate the homotopy type of the Alexander dual of a simplicial complex. In general the homotopy type of K does not determine the homotopy type of its dual K*. Moreover, one can construct for each finitely presented group G, a simply connected simplicial complex K with fundamental group isomorphic to G. We study sufficient conditions on K for K* to have the homotopy type of a sphere. We also extend the simplicial Alexander duality to the context of reduced lattices.", "revisions": [ { "version": "v1", "updated": "2012-06-15T04:30:43.000Z" } ], "analyses": { "subjects": [ "55U05", "55P15", "57Q05", "57Q10", "55M05", "06A06" ], "keywords": [ "homotopy type", "simplicial alexander duality", "study sufficient conditions", "fundamental group isomorphic", "simply connected simplicial complex" ], "note": { "typesetting": "TeX", "pages": 6, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1206.3368M" } } }