@Article{Alreshidi2024, author = "Alreshidi, B. and Hai, D.D.", title = "Uniqueness for a class p-Laplacian problems when a parameter is large", journal = "Opuscula Math.", year = "2024", volume = "44", number = "1", pages = "5--17", doi = "https://doi.org/10.7494/OpMath.2024.44.1.5", url = "https://doi.org/10.7494/OpMath.2024.44.1.5", abstract = "We prove uniqueness of positive solutions for the problem \[-\Delta_{p}u=\lambda f(u)\text{ in }\Omega,\ u=0\text{ on }\partial \Omega,\] where \(1\lt p\lt 2\) and \(p\) is close to 2, \(\Omega\) is bounded domain in \(\mathbb{R}^{n}\) with smooth boundary \(\partial \Omega\), \(f:[0,\infty)\rightarrow [0,\infty )\) with \(f(z)\sim z^{\beta }\) at \(\infty\) for some \(\beta \in (0,1)\), and \(\lambda\) is a large parameter. The monotonicity assumption on \(f\) is not required even for \(u\) large.", keywords = "singular \(p\)-Laplacian, uniqueness, positive solutions", issn = "1232-9274" }