Existence theorems of periodic solutions for second-order nonlinear difference equations.
Positive solutions for multiparameter semipositone discrete boundary value problems via variational method.
The existence of solution for boundary value problems for differential equations with deviating arguments and p-Laplacian
We consider a boundary value problem for a differential equation with deviating arguments and p-Laplacian: , x’(t), x’(τ(t))) = 0, t ∈ [0,1]; t ≤ 0; , t ≥ 1. An existence result is obtained with the help of the Leray-Schauder degree theory, with no restriction on the damping forces d/dt grad F(x).
Monotonicity properties for ground states of the scalar field equation
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