Remarks on Type III Unprojection

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dc.creatorPapadakis, Stavros Argyrios
dc.date2005-01-29
dc.date.accessioned2026-07-07T05:16:31Z
dc.date.available2026-07-07T05:16:31Z
dc.descriptionType III unprojection plays a very important role in the birational geometry of Fano threefolds. It was first introduced by A. Corti on his calculations of Fano threefolds of genus 6 and 7. It seems that at present a general definition of the type III unprojection is still missing. After proving some general facts about residual ideals, we propose a definition for the generic Type III unprojection, and prove that it gives a Gorenstein ring.
dc.description11 pages, to appear in Communications in Algebra
dc.identifierhttps://arxiv.org/abs/math/0501535
dc.identifierhttp://arxiv.org/abs/math/0501535
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/74018
dc.subjectAlgebraic Geometry
dc.subjectCommutative Algebra
dc.titleRemarks on Type III Unprojection
dc.typetext

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