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Título:
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Focal loci in G(1,N)
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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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International Press, 2005-12
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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/restrictedAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Matemáticas: Geometria algebraica
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Tipo = Artículo
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Resumen:
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We introduce the different focal loci (focal points, planes and hyperplanes) of (n - 1)-dimensional families (congruences) of lines in P-n and study their invariants, geometry and the relation among them. We also study some particular congruences whose focal loci have special behaviour, namely (n - 1)-secant lines to an (n - 2)-fold and (n - 1)-tangent lines to a hypersurface. In case n = 4 we also give, under some smoothness assumptions, a classification result for these congruences.
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En línea:
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https://eprints.ucm.es/id/eprint/14822/1/13.pdf
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