A. Calamai

activity

20092026

most citedNonzero positive solutions of elliptic systems with gradient dependence and functional BCs

17 citations · 47 across the 24 of their papers we have counts for

collaborators

Showing 2019Show all

4 papers · 1 filter

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 $Lx + εN (x) = λ C x$ , $∥ x ∥ = 1$ , where $ε, λ$ are real parameters, $L, C : G \to H$ 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…

math.AP2019★ 17 cited

Nonzero positive solutions of elliptic systems with gradient dependence and functional BCs

Stefano Biagi, Alessandro Calamai, Gennaro Infante

We discuss, by topological methods, the solvability of systems of second-order elliptic differential equations subject to functional boundary conditions under the presence of gradi…

math.CA2019★ 1 cited

Existence results for boundary value problems associated with singular strongly nonlinear equations

Stefano Biagi, Alessandro Calamai, Francesca Papalini

We consider a strongly nonlinear differential equation of the following general type $(Φ (a (t, x (t)) x^{'} (t)))^{'} = f (t, x (t), x^{'} (t)), a.e. on [0, T]$ where $f$ is a Cara…