Existence of non-negative solutions for a Dirichlet problem.
Nonexistence of positive singular solutions for a class of semilinear elliptic systems.
Existence of continuous and singular ground states for semilinear elliptic systems.
Existence of solutions for a sublinear system of elliptic equations.
Schrödinger equations with unique positive isolated singularities.
On the uniqueness of the second bound state solution of a semilinear equation
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