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The structure of an even liaison class
(1989)We describe a structure called the LazarsfeldRao property for even liaison classes in projective space. This property holds for many even liaison classes of curves in P3. We give a procedure for showing that an even ... 
Epistemology and didactis in Federigo Enriques
(2016)Analysis of the epistemological background of Federigo Enriques' didactics approach. 
On curves with natural cohomology and their deficiency modules
(1993)The minimal free resolution of the HartshorneRao module of a curve with natural cohomology is studied, and conditions are given on the degrees and the ranks of the terms of this resolution. 
Tre “se” e tante domande
(2009)Vengono analizzate, alla luce della ricerca in didattica della matematica, alcune criticità del curricolo di matematica proposto per la nuova scuola del secondo ciclo di istruzione. 
A note on the postulation of maximal rank curves
(1987)Let s be the lowest degree of a surface containing a maximal rank curve Y. We want to compare the dimension of the space of the surfaces of degree s containing Y with the dimension of the space of the surfaces of degree ... 
Deficiency modules and specializations
(1990)Given a family of curves in the projective space we study how their deficiency modules can change. This has a geometrical translation in the problem of determining how the liaison class of a flat family of curves can change. ... 
Construction of families of curves from finite length graded modules
(1990)We construct particular families of projective space curves starting from finite length graded modules, exhibiting several phenomena of specializations. The main tool is the Rao construction via a free resolution of the module. 
Arithmetically normal sheaves
(1987)We rind the upper bound for the third Chem class of a curvilinear sheaf with seminatural cohomology, and we determine all the triples of Chem classes for which there exist two different kinds of seminatural cohomology. ... 
Deformations of Arithmetically CohenMacaulay subvarieties of Pn
(1989)We show that every arithmetically CohenMacaulay twocodimensional subscheme ofPn can be deformed to a reduced union of twocodimensional linear subvarieties. This problem (classical for curves with the name of Zeuthen ...