The method of upper and lower solutions and convexity arguments are used to prove sharp results for the existence and multiplicity of periodic solutions for first order ordinary differential equations depending upon a parameter.Anglai
AbstractWe study the existence of T-periodic solutions of some first order functional differential e...
summary:This paper is concerned with periodic solutions of first-order nonlinear functional differen...
objective of this note is the announcement of two results of Ambrosetti-Prodi type concerning the ex...
AbstractWe study a periodic boundary value problem for a first-order differential equation from a ne...
An elementary approach, based on a systematic use of lower and upper solutions, is employed to detec...
After recalling the fundamental concepts and results of the method of upper and lower solutions for ...
The lower and upper solution method is applied to prove existence of periodic solutions for first or...
AbstractWe introduce a generalized upper and lower solutions method for the solvability of first-ord...
Approaches to estimate the number of almost periodic solutions of ordinary differential equations ar...
We prove a multiplicity result of Ambrosetti–Prodi type problems of higher order. Proofs are ...
Approaches to estimate the number of almost periodic solutions of ordinary differential equations ar...
First order ordinary differential equations with several bounded separate solutions.Tineo, Antonio R...
J. oflnequal. & Appl., 1998, Vol. 2, pp. 307-323 Reprints available directly from the publisher ...
We study a periodic boundary value problem for a first-order differential equation from a new point ...
In this paper we extend the guiding function approach to show that there are periodic or bounded sol...
AbstractWe study the existence of T-periodic solutions of some first order functional differential e...
summary:This paper is concerned with periodic solutions of first-order nonlinear functional differen...
objective of this note is the announcement of two results of Ambrosetti-Prodi type concerning the ex...
AbstractWe study a periodic boundary value problem for a first-order differential equation from a ne...
An elementary approach, based on a systematic use of lower and upper solutions, is employed to detec...
After recalling the fundamental concepts and results of the method of upper and lower solutions for ...
The lower and upper solution method is applied to prove existence of periodic solutions for first or...
AbstractWe introduce a generalized upper and lower solutions method for the solvability of first-ord...
Approaches to estimate the number of almost periodic solutions of ordinary differential equations ar...
We prove a multiplicity result of Ambrosetti–Prodi type problems of higher order. Proofs are ...
Approaches to estimate the number of almost periodic solutions of ordinary differential equations ar...
First order ordinary differential equations with several bounded separate solutions.Tineo, Antonio R...
J. oflnequal. & Appl., 1998, Vol. 2, pp. 307-323 Reprints available directly from the publisher ...
We study a periodic boundary value problem for a first-order differential equation from a new point ...
In this paper we extend the guiding function approach to show that there are periodic or bounded sol...
AbstractWe study the existence of T-periodic solutions of some first order functional differential e...
summary:This paper is concerned with periodic solutions of first-order nonlinear functional differen...
objective of this note is the announcement of two results of Ambrosetti-Prodi type concerning the ex...