Guglielmo Feltrin

activity

20242026

collaborators

Showing math.APShow all

2 papers · 1 filter

math.AP2025

Uniqueness, non-degeneracy, and exact multiplicity of positive solutions for superlinear elliptic problems

Guglielmo Feltrin, Christophe Troestler

In this paper, we focus our attention on the positive solutions to second-order nonlinear ordinary differential equations of the form $u^{''} + q (t) g (u) = 0$ , where $q$ is a sign-changing…

math.AP2025

A proof of a conjecture on the multiplicity of positive solutions of an indefinite superlinear problem

Guglielmo Feltrin, JuliÃ¡n LÃ³pez-GÃ³mez, Juan Carlos Sampedro

This paper solves in a positive manner a conjecture stated in 2000 by R. GÃ³mez-ReÃ±asco and J. LÃ³pez-GÃ³mez regarding the multiplicity of positive solutions of a paradigmatic cla…