On a class of partial -spreads of arising from scrolls.
Ballico, E., Cossidente, A. (2000)
Mathematica Pannonica
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Displaying similar documents to “Subvarieties of Segre varieties and trisecant lines.”
On a class of partial -spreads of arising from scrolls.
Linear systems representing threefolds which are scrolls on a rational surface.
Emilia Mezzetti, Dario Portelli (1998)
Collectanea Mathematica
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Curves of maximal genus in .
Ferraro, R. (2003)
Advances in Geometry
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Non-primitive linear systems on smooth algebraic curves and a generalization of Maroni theory.
Ballico, E. (2001)
Rendiconti del Seminario Matematico
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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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Prym varieties and the canonical map of surfaces of general type
Ciro Ciliberto, Rita Pardini, Francesca Tovena (2000)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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Some remarks on plane curves over fields of finite characteristic
Rita Pardini (1986)
Compositio Mathematica
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Weierstrass points and Weierstrass pairs on singular plane curves.
Ballico, E. (2000)
Mathematica Pannonica
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Towards the classification of weak Fano threefolds with ρ = 2
Joseph Cutrone, Nicholas Marshburn (2013)
Open Mathematics
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In this paper, examples of type II Sarkisov links between smooth complex projective Fano threefolds with Picard number one are provided. To show examples of these links, we study smooth weak Fano threefolds X with Picard number two and with a divisorial extremal ray. We assume that the pluri-anticanonical morphism of X contracts only a finite number of curves. The numerical classification of these particular smooth weak Fano threefolds is completed and the geometric existence of some...
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.