scholarly journals Extremal solutions to fourth order discontinuous functional boundary value problems

2013 ◽  
Vol 286 (17-18) ◽  
pp. 1744-1751 ◽  
Author(s):  
Alberto Cabada ◽  
João Fialho ◽  
Feliz Minhós
2012 ◽  
Vol 48 (1) ◽  
pp. 1-10 ◽  
Author(s):  
N. I. Vasil’ev ◽  
A. Ya. Lepin ◽  
L. A. Lepin

2008 ◽  
Vol 15 (3) ◽  
pp. 555-569
Author(s):  
Tariel Kiguradze

Abstract In the rectangle Ω = [0, a] × [0, b] the nonlinear hyperbolic equation 𝑢(2,2) = 𝑓(𝑥, 𝑦, 𝑢) with the continuous right-hand side 𝑓 : Ω × ℝ → ℝ is considered. Unimprovable in a sense sufficient conditions of solvability of Dirichlet, Dirichlet–Nicoletti and Nicoletti boundary value problems are established.


2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Bingzhi Sun ◽  
Weihua Jiang

Abstract By defining the Banach spaces endowed with the appropriate norm, constructing a suitable projection scheme, and using the coincidence degree theory due to Mawhin, we study the existence of solutions for functional boundary value problems at resonance on the half-line with $\operatorname{dim}\operatorname{Ker}L = 1$ dim Ker L = 1 . And an example is given to show that our result here is valid.


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