Branched shadows and complex structures of 4-manifolds

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dc.creatorCostantino, Francesco
dc.date2005-02-14
dc.date.accessioned2026-07-07T05:17:00Z
dc.date.available2026-07-07T05:17:00Z
dc.descriptionWe define and study branched shadows of 4-manifolds as a combination of branched spines of 3-manifolds and Turaev's shadows. We use these objects to combinatorially represent 4-manifolds equipped with $Spin^c$-structures and homotopy classes of almost complex structures. We then use branched shadows to study complex 4-manifolds and prove that each almost complex structure on a 4-handlebody is homotopic to a complex one.
dc.description24 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/math/0502292
dc.identifierhttp://arxiv.org/abs/math/0502292
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/74195
dc.subjectGeometric Topology
dc.subjectDifferential Geometry
dc.subject57M20; 32C60
dc.titleBranched shadows and complex structures of 4-manifolds
dc.typetext

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