Smooth Enriques surfaces in P4 and exceptional bundles.
Smooth global complete intersections in certain compact homogenous complex manifolds.
Smooth non-special surfaces of P4.
Smooth projective varieties dominated by smooth quadric hypersurfaces in any characteristic.
Smooth quartic surfaces with 352 conics.
Smooth Rational Curves on Enriques Surfaces.
Smooth structures on algebraic surfaces with finite fundamental group.
Smoothing Cusp Singularities of Small Length.
Smoothings of cusp singularities via triangle singularities
Solutions de quelques problèmes relatifs aux surfaces du second degré.
Some abelian threefolds with nontrivial Griffiths group
Some birational maps of Fano 3-folds
Some boundedness results for Fano-like Moishezon manifolds.
Some defective secant varieties to osculating varieties of Veronese surfaces.
We consider the k-osculating varietiesOk,d to the Veronese d?uple embeddings of P2. By studying the Hilbert function of certain zero-dimensional schemes Y ⊂ P2, we find the dimension of Osk,d, the (s?1)th secant varieties of Ok,d, for 3 ≤ s ≤ 6 and s = 9, and we determine whether those secant varieties are defective or not.
Some density results for curves with non-simple jacobians.
Some geometric aspects of Puiseux surfaces.
This paper is part of the author's thesis, recently presented, where the following problem is treated: Characterizing the tangent cone and the equimultiple locus of a Puiseux surface (that is, an algebroid embedded surface admitting an equation whose roots are Puiseux power series) , using a set of exponents appearing in a root of an equation. The aim is knowing to which extent the well known results for the quasi-ordinary case can be extended to this much wider family.
Some geometry and combinatorics for the -invariant of ternary cubics.
Some intrinsic and extrinsic characterizations of the projective space
Some nonreduced moduli of bundles and Donaldson invariants for Dolgachev surfaces.
Some polynomials on the blow-up of [...]