Reduction from a semi-infinite interval to a finite interval of a nonlinear boundary value problem for a system of second-order equations with a small parameter.
Reduction of an operator equation in to an equivalent bifurcation equation through Schauder's fixed point theorem.
Reguläre Eigenwertprobleme mit Mehrpunkt-Integral-Randbedingungen.
Regularized trace of the Sturm-Liouville operator with irregular boundary conditions.
Relative boundedness and compactness theory for second-order differential operators.
Relativistic wave equations with fractional derivatives and pseudodifferential operators.
Remark on Duffing equation with Dirichlet boundary condition.
Remarks on a three-point boundary value problem in a differential equation of the third order
Remarks on existence of positive solutions of some integral equations
We study the existence of positive solutions of the integral equation in both and spaces, where and . Throughout this paper is nonnegative but the nonlinearity may take negative values. The Krasnosielski fixed point theorem on cone is used.
Remarks on Krasnoselskii bifurcation theorem
Remarks on multiple periodic solutions of nonlinear ordinary differential equations
Remarks on Nagumo's condition.
Remarks on nonlinear noncoercive problems with jumping nonlinearities
Remarks on periodic solvability of nonlinear ordinary differential equations
Remarks on semilinear problems with nonlinearities depending on the derivative.
Remarks on Some Dirichlet Type Results for Semibounded Sturm-Liouville Operators.
Remarks on some monotonicity conditions for the period function
We are interested in the optimality of monotonicity criteria for the period function of some planar Hamiltonian systems. This study is illustrated by examples.
Remarks on some nonlinear boundary value problems
Remarks on some nonlinear Dirichlet problems with unbounded nonlinearities
Remarks on the uniqueness of radial solutions