9 citations · 14 across the 4 of their papers we have counts for
5 papers
High multiplicity and chaos for an indefinite problem arising from genetic models
Alberto Boscaggin, Guglielmo Feltrin, Elisa Sovrano
We deal with the periodic boundary value problem associated with the parameter-dependent second-order nonlinear differential equation \begin{equation*} u'' + cu' + \bigr{(} λa^{+}(…
Periodic solutions of a perturbed Kepler problem in the plane: from existence to stability
Alberto Boscaggin, Rafael Ortega
The existence of elliptic periodic solutions of a perturbed Kepler problem is proved. The equations are in the plane and the perturbation depends periodically on time. The proof is…
Multiple positive solutions for a class of p-Laplacian Neumann problems without growth conditions
Alberto Boscaggin, Francesca Colasuonno, Benedetta Noris
For , we consider the following problem where is either a ball or…
Positive subharmonic solutions to nonlinear ODEs with indefinite weight
Alberto Boscaggin, Guglielmo Feltrin
We prove that the superlinear indefinite equation \begin{equation*} u" + a(t)u^{p} = 0, \end{equation*} where and is a -periodic sign-changing function satisfying…
Pairs of positive periodic solutions of nonlinear ODEs with indefinite weight: a topological degree approach for the super-sublinear case
Alberto Boscaggin, Guglielmo Feltrin, Fabio Zanolin
We study the periodic and the Neumann boundary value problems associated with the second order nonlinear differential equation \begin{equation*} u'' + c u' + λa(t) g(u) = 0, \end{e…