The existence of positive solutions for an elliptic boundary value problem.
Boundedness and monotonicity of principal eigenvalues for boundary value problems with indefinite weight functions.
On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems.
Minimax inequality for a special class of functionals and its application to existence of three solutions for a Dirichlet problem in one-dimensional case.
On the positive and negative solutions of Laplacian BVP with Neumann boundary conditions.
Existence of three anti-periodic solutions for second-order impulsive differential inclusions with two parameters
Applying two three critical points theorems, we prove the existence of at least three anti-periodic solutions for a second-order impulsive differential inclusion with a perturbed nonlinearity and two parameters.
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