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Título:
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On the ampleness ofthe normal bundle of line congruences
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Autores:
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Arrondo Esteban, Enrique ;
Bertolini, Marina ;
Turrini, Cristina
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Tipo de documento:
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texto impreso
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Editorial:
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WALTER DE GRUYTER, 2011
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Matemáticas: Álgebra
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Tipo = Artículo
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Resumen:
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In this paper we study the normal bundle of the embedding of subvarieties of dimension n - 1 in the Grassmann variety of lines in P(n). Making use of some results on the geometry of the focal loci of congruences ([4] and [5]), we give some criteria to decide whether the normal bundle of a congruence is ample or not. Finally we apply these criteria to the line congruences of small degree in P(3).
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En línea:
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https://eprints.ucm.es/id/eprint/14736/1/01.pdf
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