Parallel Kustin-Miller unprojection with an application to Calabi-Yau geometry
نویسندگان
چکیده
منابع مشابه
Parallel Kustin–miller Unprojection with an Application to Calabi–yau Geometry
Kustin–Miller unprojection constructs more complicated Gorenstein rings from simpler ones. Geometrically, it inverts certain projections, and appears in the constructions of explicit birational geometry. However, it is often desirable to perform not only one but a series of unprojections. The main aim of the present paper is to develop a theory, which we call parallel Kustin–Miller unprojection...
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Gorenstein projection plays a key role in birational geometry; the typical example is the linear projection of a del Pezzo surface of degree d to one of degree d− 1, but variations on the same idea provide many of the classical and modern birational links between Fano 3-folds. The inverse operation is the Kustin–Miller unprojection theorem, which constructs “more complicated” Gorenstein rings s...
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ژورنال
عنوان ژورنال: Proceedings of the London Mathematical Society
سال: 2012
ISSN: 0024-6115
DOI: 10.1112/plms/pds036