5 citations · 6 across the 4 of their papers we have counts for
4 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…