Título:
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Very ampleness and higher syzygies for Calabi-Yau threefolds
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Autores:
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Gallego Rodrigo, Francisco Javier ;
Purnaprajna, Bangere P.
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Tipo de documento:
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texto impreso
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Editorial:
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Springer, 1998-09
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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: Geometria algebraica
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Tipo = Artículo
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Resumen:
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The authors prove various results concerning multiples of ample, base-point-free linear systems on Calabi-Yau threefolds. Suppose that B is an ample divisor on a Calabi-Yau threefold X, and that |B| has no base-points. Then the authors prove that 3B is very ample and embeds X as a projectively normal variety if and only if |B| does not map X 2:1 onto P3. Similarly, they prove that |2B| enjoys the same properties if and only if |B| does not map X onto a variety of minimal degree other than P3, nor maps X 2:1 onto P3. Further results are proved, giving conditions for when the linear system nB satisfies the condition Np.
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En línea:
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https://eprints.ucm.es/id/eprint/12604/1/1998veryampleness.pdf
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