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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Ballico, E. (2001)
Rendiconti del Seminario Matematico
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Ballico, E., Cossidente, A. (1997)
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Ballico, E., Cossidente, A. (2000)
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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...
Ballico, E. (2006)
Matematichki Vesnik
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Torsten Ekedahl (1988)
Publications Mathématiques de l'IHÉS
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Edoardo Ballico (2002)
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Let X be a smooth connected projective curve of genus g defined over R. Here we give bounds for the real gonality of X in terms of the complex gonality of X.
Ciro Ciliberto, Rita Pardini, Francesca Tovena (2000)
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Marc Coppens, Gerriet Martens (1991)
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