Displaying 361 – 380 of 439

Showing per page

Solvability of a higher-order multi-point boundary value problem at resonance

Xiaojie Lin, Qin Zhang, Zengji Du (2011)

Applications of Mathematics

Based on the coincidence degree theory of Mawhin, we get a new general existence result for the following higher-order multi-point boundary value problem at resonance x ( n ) ( t ) = f ( t , x ( t ) , x ' ( t ) , , x ( n - 1 ) ( t ) ) , t ( 0 , 1 ) , x ( 0 ) = i = 1 m α i x ( ξ i ) , x ' ( 0 ) = = x ( n - 2 ) ( 0 ) = 0 , x ( n - 1 ) ( 1 ) = j = 1 l β j x ( n - 1 ) ( η j ) , where f : [ 0 , 1 ] × n is a Carathéodory function, 0 < ξ 1 < ξ 2 < < ξ m < 1 , α i , i = 1 , 2 , , m , m 2 and 0 < η 1 < < η l < 1 , β j , j = 1 , , l , l 1 . In this paper, two of the boundary value conditions are responsible for resonance.

Sufficient conditions for the solvability of some third order functional boundary value problems on the half-line

Hugo Carrasco, Feliz Minhós (2017)

Commentationes Mathematicae Universitatis Carolinae

This paper is concerned with the existence of bounded or unbounded solutions to third-order boundary value problem on the half-line with functional boundary conditions. The arguments are based on the Green functions, a Nagumo condition, Schauder fixed point theorem and lower and upper solutions method. An application to a Falkner-Skan equation with functional boundary conditions is given to illustrate our results.

Sul problema del rimbalzo in un insieme convesso

Marco Degiovanni (1982)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

In the present paper we seek the bounce trajectories in a convex set which assume assigned positions in two fixed time instants. We find sufficient conditions in order to obtain the existence of infinitely many bounce trajectories.

Currently displaying 361 – 380 of 439