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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Displaying similar documents to “On surfaces with and non-birational bicanonical maps.”
Prym varieties and the canonical map of surfaces of general type
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.
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.
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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On the existence of k-normal curves of given degree and genus in projective spaces.
Edoardo Ballico, N. Chiarli, S. Greco (2004)
Collectanea Mathematica
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We find some ranges for the 4-tuples of integers (d,g,n,r) for which there is a smooth connected non-degenerate curve of degree d and genus g, which is k-normal for every k ≤ r.
Open surfaces with non-positive Euler characteristic
R. V. Gurjar, A. J. Parameswaran (1995)
Compositio Mathematica
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Certain algebraic surfaces with non-reduced moduli space.
Konno, K. (2000)
Portugaliae Mathematica
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-dimensions of algebraic surfaces and numerically effective divisors
Fumio Sakai (1983)
Compositio Mathematica
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