Sturm-Picone comparison theorem of second-order linear equations on time scales.
Su alcuni criteri di oscillazione per le equazioni differenziali lineari del secondo ordine
Su un'equazione astratta di tipo ellittico-iperbolico
Substitution method for generalized linear differential equations
The generalized linear differential equation where and the matrices are regular, can be transformed using the notion of a logarithimc prolongation along an increasing function. This method enables to derive various results about generalized LDE from the well-known properties of ordinary LDE. As an example, the variational stability of the generalized LDE is investigated.
Successive iteration and positive solutions for nonlinear -point boundary value problems on time scales.
Sufficient and necessary condition for the permanence of periodic predator-prey system.
Sufficient conditions for oscillations of all solutions of a class of impulsive differential equations with deviating argument.
Sufficient conditions for the oscillation of -th order nonlinear delay differential equation
Sufficient conditions for the oscillation of the solutions to a class of impulsive differential equations with advanced argument.
Sufficient conditions for two-dimensional point dissipative nonlinear systems.
Sugli zeri delle soluzioni di una classe di equazioni differenziali lineari del secondo ordine
Sul problema di Cauchy per le equazioni paraboliche astratte di ordine
Sulla diseguaglianza di Wirtinger
Summation of Formal Power Series Through Iterated Laplace Integrals.
Superlinear singular problems on the half line.
Sup-measurable and weakly sup-measurable mappings in the theory of ordinary differential equations.
Sur des fonctions de deux variables provenant de l'inversion des intégrales de deux fonctions données
Sur différentes formes que l'on peut donner à l'intégrale de l'équation d'Euler
Sur la fonction
Sur la frontière d'un convexe mobile
Siano , sottoinsiemi convessi, chiusi e limitati di uno spazio normato , con le frontiere , . Dimostriamo che , dove è la metrica di Hausdorff tra sottoinsiemi chiusi di . Studiamo inoltre la continuità e la semicontinuità superiore ed inferiore di una multifunzione di tipo «frontiera».