28 citations · 95 across the 29 of their papers we have counts for
29 papers
On the strong base locus of a projective variety
Edoardo Ballico, Maria Chiara Brambilla, Pierpaola Santarsiero
We introduce and study the base locus and the strong base locus of a projective variety X. The base locus of X parametrizes configurations of smooth points of X where the span of t…
Birational geometry of blowups via Weyl chamber decompositions and actions on curves
Maria Chiara Brambilla, Olivia Dumitrescu, Elisa Postinghel +1
We study the birational geometry of , the blow-up of at points in general position. We identify a set of subvarieties, which we call Weyl -p…
Terracini loci and a codimension one Alexander-Hirschowitz theorem
Edoardo Ballico, Maria Chiara Brambilla, Claudio Fontanari
The Terracini locus is the locus of all finite subsets of of cardinality such that , $h^0(\mathcal{I…
Non-defectivity of Segre-Veronese varieties
Hirotachi Abo, Maria Chiara Brambilla, Francesco Galuppi +1
We prove that Segre-Veronese varieties are never secant defective if each degree is at least three. The proof is by induction on the number of factors, degree and dimension. As a c…
Nonvanishing and Abundance for cones of movable divisors
Gilberto Bini, Maria Chiara Brambilla, Claudio Fontanari +1
Let be the closure of the cone generated by classes of effective divisors on a projective variety with stable base locus of c…
Minimal Terracini loci in the plane: gaps and non-gaps
Edoardo Ballico, Maria Chiara Brambilla
We study minimally Terracini finite sets of points in the projective plane and we prove that the sequence of the cardinalities of minimally Terracini sets can have any number of ga…