Arrondo Esteban, Enrique and Sols Lucía, Ignacio (1989) Classification of smooth congruences of low degree. Journal für die reine und angewandte Mathematik, 393 . pp. 199-219. ISSN 0075-4102
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We give a complete classification of smooth congruences - i.e. surfaces in the Grassmann variety of lines in P 3C identified with a smooth quadric in P5- of degree at most 8, by studying which surfaces of P5can lie in a smooth quadric and proving their existence. We present their ideal sheaf as a quotient of natural bundles in the Grassmannian, what provides a perfect knowledge of its cohomology (for example postulation or linear normality), as well as many information on the Hilbert scheme of these families, such as dimension, smoothness, unirationality - and thus irreducibility - and in some cases rationality.
|Uncontrolled Keywords:||Smooth congruences; surfaces in the Grassmann variety of lines; cohomology; postulation; linear normality; Hilbert scheme|
|Subjects:||Sciences > Mathematics > Algebraic geometry|
|Deposited On:||18 Apr 2012 12:37|
|Last Modified:||19 Mar 2013 20:14|
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