On the number of positive solutions to an indefinite parameter-dependent Neumann problem

Guglielmo Feltrin, Elisa Sovrano, Andrea Tellini

We study the second-order boundary value problem \begin{equation*} \begin{cases} \, -u''=a_{λ,μ}(t) \, u^{2}(1-u), & t\in(0,1), \\ \, u'(0)=0, \quad u'(1)=0, \end{cases} \end{equat…