7 citations · 13 across the 8 of their papers we have counts for
16 papers
Numerical Godeaux surfaces with an involution
Alberto Calabri, Ciro Ciliberto, Margarida Mendes Lopes
Minimal algebraic surfaces of general type with the smallest possible invariants have geometric genus zero and K^2=1 and are usually called "numerical Godeaux surfaces". Although t…
Even sets of four nodes on rational surfaces
Alberto Calabri, Ciro Ciliberto, Margarida Mendes Lopes
We describe smooth rational projective algebraic surfaces X, over an algebraically closed field of characteristic different from 2, having an even set of four disjoint (-2)-curves…
Canonical map of low codimensional subvarieties
Valentina Beorchia, Ciro Ciliberto, Vincenzo Di Gennaro
Fix integers , and . We prove that for certain projective varieties (e.g. certain possibly singular complete intersections), there are only fi…
On the classification of defective threefolds
L. Chiantini, C. Ciliberto
We classify all irreducible projective threefolds which are -defective, i.e. some -secant variety of has dimension less than the expected value. This results extends…
On the geometric genus of reducible surfaces and degenerations of surfaces to unions of planes
A. Calabri, C. Ciliberto, F. Flamini +1
In this paper we study some properties of degenerations of surfaces whose general fibre is a smooth projective surface and whose central fibre is a reduced, connected surface $X \s…
3-fold symmetric products of curves as hyperbolic hypersurfaces in $\Proj^4$
Ciro Ciliberto, Mikhail Zaidenberg
We construct new examples of Kobayashi hyperbolic hypersurfaces in the projective 4-space. They are generic projections of the triple symmetric product of a generic curve of genus…