Linear systems representing threefolds which are scrolls on a rational surface.
Emilia Mezzetti, Dario Portelli (1998)
Collectanea Mathematica
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Displaying similar documents to “Arithmetically Gorenstein curves on arithmetically Cohen-Macaulay surfaces.”
Linear systems representing threefolds which are scrolls on a rational surface.
A note on a theorem of Xiao Gang.
Margarita Mendes Lopes (2004)
Collectanea Mathematica
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In 1985 Xiao Gang proved that the bicanonical surface of a complex surface S of general type with p2(S) > 2 is not composed of a pencil. In this note a new proof of this theorem is presented.
Relations in the canonical algebras on surfaces
Kazuhiro Konno (2008)
Rendiconti del Seminario Matematico della Università di Padova
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On surfaces with and non-birational bicanonical maps.
Ciliberto, Ciro, Mendes Lopes, Margarida (2002)
Advances in Geometry
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Subvarieties of Segre varieties and trisecant lines.
Ballico, E., Cossidente, A. (1997)
Mathematica Pannonica
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Geometry of arithmetically Gorenstein curves in P.
Robin Hartshorne (2004)
Collectanea Mathematica
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We characterize the postulation character of arithmetically Gorenstein curves in P. We give conditions under which the curve can be realized in the form mH - K on some ACM surface. Finally, we complement a theorem by Watanabe by showing that any general arithmetically Gorenstein curve in P with arbitrary fixed postulation character can be obtained from a line by a series of ascending complete-intersection biliaisons.
On Even surfaces of general type with
Paolo Antonio Oliverio (2005)
Rendiconti del Seminario Matematico della Università di Padova
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Algebraic varieties of dimension three whose hyperplane sections are Enriques surfaces
A. Conte, J. P. Murre (1985)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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The irregularity of ruled surfaces in three dimensional projective space.
Luis Giraldo, Ignacio Sols (1998)
Collectanea Mathematica
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Let S be a ruled surface in P3 with no multiple generators. Let d and q be nonnegative integers. In this paper we determine which pairs (d,q) correspond to the degree and irregularity of a ruled surface, by considering these surfaces as curves in a smooth quadric hypersurface in P5.