A duality between Schrödinger operators on graphs and certain Jacobi matrices
A Finite Element Merthod Scheme for one Dimensional Elliptic Equations with High Super Convergence at the Nodes.
A Finite Element Method for a Singularly Perturbed Boundary Value Problem.
A finite element method for a two point boundary value problem with a small parameter affecting the highest derivative
A first order accuracy scheme on non-uniform mesh.
A four-point problem for differential equations of the second order
A four-point problem for second-order differential systems
A fourth-order boundary value problem with one-sided Nagumo condition.
A Galerkin method of for singular boundary value problems.
A Galerkin Method with Modified Piecewise Polynomials for Solving a Second-Order Boundary Value Problem.
A generalization of the Landesman-Lazer condition.
A generalized Fuc̆ik type eigenvalue problem for p-Laplacian.
A generalized periodic boundary value problem for the one-dimensional p-Laplacian
The generalized periodic boundary value problem -[g(u’)]’ = f(t,u,u’), a < t < b, with u(a) = ξu(b) + c and u’(b) = ηu’(a) is studied by using the generalized method of upper and lower solutions, where ξ,η ≥ 0, a, b, c are given real numbers, , p > 1, and f is a Carathéodory function satisfying a Nagumo condition. The problem has a solution if and only if there exists a lower solution α and an upper solution β with α(t) ≤ β(t) for a ≤ t ≤ b.
A generalized upper and lower solutions method for nonlinear second order ordinary differential equations.
A general-weighted Sturm-Liouville problem
A global curve of stable, positive solutions for a -Laplacian problem.
A global description of the positive solutions of sublinear second-order discrete boundary value problems.
A Hartman-Nagumo inequality for the vector ordinary -Laplacian and applications to nonlinear boundary value problems.
A higher-order method for nonlinear singular two-point boundary value problems.
A Limit-Point Criterion for Separated Dirac Operators and a Little Known Result on Riccati's Equation.