Sopra una caratterizzazione delle metriche naturali degli spazi sferici e proiettivi.
Sopra le varietà differenziabili
It is shown how the study of the differentiable manifolds imbedded in a Euclidean space can be based on Levi-Civita's notion of parallelism.
Sopra le curve chiuse sghembe
Some properties of closed twisted curves are studied by using a spherical surface associated to them, according to a general procedure given by the Author in a recent paper [1]. Thus we obtain that an integer l can be associated to any closed twisted curve C and surface S containing C.
Sopra le funzioni di Morse degli spazi lenticolari
On obtient des fonctions de Morse très simples sur chaque espace lenticulaire, et on détermine leurs points critiques.
Page 1