Il sottogruppo generato dalle involuzioni regolari di un -ovale -transitivo
Il Teorema di Hasse-Weil e la costruzione di archi completi di cardinalità piccola in piani di Galois di ordine dispari
In questa Nota costruiamo una famiglia di -archi completi di tale che , per ogni . La dimostrazione della completezza si basa sul classico Teorema di Hasse-Weil riguardante il numero dei punti di una curva algebrica irriducibile di .
Immeubles de Tits triangulaires exotiques
Improvement of inequalities for the -structures and some geometrical connections
The main results are the inequalities (1) and (6) for the minimal number of -structure classes,which improve the ones from [3], and also some geometrical connections, especially the inequality (13).
Incidence structures of independent sets
Intersections in Projective Space I: Combinatorics.
Invariants of a class of transformation groups II.
Invariants of a class of transformation groups II. (Short Communication).
Involutory Collineations of Finite Planes.
Isometric imbeddings of Euclidean spaces into finite dimensional -spaces
It is shown that imbeds isometrically into provided that n is a prime power plus one, in the complex case. This and similar imbeddings are constructed using elementary techniques from number theory, combinatorics and coding theory. The imbeddings are related to existence of certain cubature formulas in numerical analysis.
Isomorphism of projective planes and isotopism of planar ternary rings
Isomorphisms between Subiaco -clan geometries.