On the number of non-equivalent differentiable structures on 4-Manifolds.
On the Periods of Enriques Surfaces. I.
On the Periods of Enriques Surfaces. II.
On the Picard number of a complex projective variety
On the Picard-Fuchs Equation and the Formal Brauer Group of Certain Elliptic K3-Surfaces.
On the preservation of k-very ampleness under adjunction.
On the Resolution of Cusp Singularities and the Shintani Decomposition in Totally Real Cubic Number Fields.
On the smallest degree of a surface containing a space curve
Sia una curva dello spazio di grado contenuta in una superficie di grado e non in una di grado . Se è integra, allora ; questo limite superiore, raggiunto in alcuni casi (cfr. [5]), non vale però per curve arbitrarie (cfr. [?, 3 (iii)]). Ogni curva dello spazio (anche non ridotta o riducibile) può essere ottenuta come schema degli zero di una sezione non nulla di un opportuno fascio riflessivo di rango 2. Mediante i fasci riflessivi, siamo in grado di estendere alle curve riducibili...
On triple curves through a rational triple point of a surface
Let k be an algebraically closed field of characteristic 0. Let C be an irreducible nonsingular curve in ℙⁿ such that 3C = S ∩ F, where S is a hypersurface and F is a surface in ℙⁿ and F has rational triple points. We classify the rational triple points through which such a curve C can pass (Theorem 1.8), and give an example (1.12). We only consider reduced and irreducible surfaces.
On Two Types of Surfaces of General Type with Vanishing Geometric Genus.
On unions of scrolls along linear spaces
On Unirationality of Supersingular Surfaces.
One attempt to the modular function I
One attempt to the modular function - II
Open surfaces with non-positive Euler characteristic
Osculatory behavior and second dual varieties of Del Pezzo surfaces.
Period relations and the Tate conjecture for Hubert modular surfaces.
Periods of Enriques Surfaces.
Periods of Mixed Cusp Forms.
Picard groups of Zariski surfaces