A bifurcation-type theorem for singular nonlinear elliptic equations

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Positive solutions for nonlinear parametric singular Dirichlet problems (2018, unknown): “) into C1 0(Ω) (that is, if 0 < ϑ<λ, then u˜ϑ 6 u˜λ) and ||˜uλ||C1 0(Ω) →0 as λ→0+. Proof. The existence of a unique solution ˜uλ ∈intC+ follows from Proposition 5 of Papageorgiou & Smyrlis [18]. Let 0 <ϑ<λand let ˜uϑ,u˜λ ∈intC+ be the corresponding unique solutions of problem (Auλ).”
Nonlinear nonhomogeneous singular problems (2019, methodology): “oblems can also be found in the papers of Lair & Shaker [21], Sun, Wu & Long [41] (semilinear problems with a(y) = y) and by Giacomoni, Schindler & Takaˇc [17], Papageorgiou & Smyrlis [36] (nonlinear problems with a(y) = |y|p−2y). In all the aforementioned works the singular term has”
Positive solutions for nonlinear Neumann problems with singular terms and convection (2020, methodology): “For singular problems, we mention the works of Giacomoni, Schindler & Takac [7], Hirano, Saccon & Shioji [1], Papageorgiou & Rădulescu [16], Papageorgiou, Rădulescu & Repovš [19, 21], Papageorgiou & Smyrlis [22, 23], Perera & Zhang [24], and Su, Wu & Long [27].”