activity
20192022
most citedExistence results for boundary value problems associated with singular strongly nonlinear equations

1 citations · 1 across the 5 of their papers we have counts for

collaborators

8 papers

math.CA2022

Periodic perturbations of a class of scalar second order functional differential equations

Alessandro Calamai, Maria Patrizia Pera, Marco Spadini

We study, by means of a topological approach, the forced oscillations of second order functional retarded differential equations subject to periodic perturbations. We consider a de…

math.SP2021

Global persistence of the unit eigenvectors of perturbed eigenvalue problems in Hilbert spaces: the odd multiplicity case

Pierluigi Benevieri, Alessandro Calamai, Massimo Furi +1

We study the persistence of eigenvalues and eigenvectors of perturbed eigenvalue problems in Hilbert spaces. We assume that the unperturbed problem has a nontrivial kernel of odd d…

math.SP2020

A degree associated to linear eigenvalue problems in Hilbert spaces and applications to nonlinear spectral theory

Pierluigi Benevieri, Alessandro Calamai, Massimo Furi +1

We extend to the infinite dimensional context the link between two completely different topics recently highlighted by the authors: the classical eigenvalue problem for real square…

math.CA2020

Boundary value problems associated with singular strongly nonlinear equations with functional terms

Stefano Biagi, Alessandro Calamai, Cristina Marcelli +1

We study boundary value problems associated with singular, strongly nonlinear differential equations with functional terms of type $$\big(Φ(k(t)\,x'(t))\big)' + f(t,\mathcal{G}_x(t…

math.SP2019

Global persistence of the unit eigenvectors of perturbed eigenvalue problems in Hilbert spaces

Pierluigi Benevieri, Alessandro Calamai, Massimo Furi +1

We consider the nonlinear eigenvalue problem , , where are real parameters, are bounded linear operators…

math.SP2019

The Brouwer degree associated to classical eigenvalue problems and applications to nonlinear spectral theory

Pierluigi Benevieri, Alessandro Calamai, Massimo Furi +1

Thanks to a connection between two completely different topics, the classical eigenvalue problem in a finite dimensional real vector space and the Brouwer degree for maps between o…