Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Feliz Minhos"'
Autor:
Feliz Minhós, Gracino Rodrigues
Publikováno v:
Boundary Value Problems, Vol 2024, Iss 1, Pp 1-31 (2024)
Abstract This work contains sufficient conditions for the solvability of a third-order coupled system with two differential equations involving different Laplacians, fully discontinuous nonlinearities, two-point boundary conditions, and two sets of i
Externí odkaz:
https://doaj.org/article/a177078317f147f3917b35604274075f
Autor:
Feliz Minhós, Sara Perestrelo
Publikováno v:
AIMS Mathematics, Vol 8, Iss 7, Pp 16542-16555 (2023)
We present some existence and localization results for periodic solutions of first-order coupled nonlinear systems of two equations, without requiring periodicity for the nonlinearities. The arguments are based on Schauder's fixed point theorem toget
Externí odkaz:
https://doaj.org/article/d1fd3b838e0a4144a6c494ffacae8346
Autor:
Feliz Minhós, Nuno Oliveira
Publikováno v:
AIMS Mathematics, Vol 8, Iss 6, Pp 12986-12999 (2023)
This work presents a discussion of Ambrosetti-Prodi-type second-order periodic problems. In short, the existence, non-existence, and multiplicity of solutions will be discussed on the parameter $ \lambda $. The arguments rely on a Nagumo condition, t
Externí odkaz:
https://doaj.org/article/b10b524857684d759b0cabec7b9ce7a2
Autor:
Feliz Minhós, Gracino Rodrigues
Publikováno v:
Mathematics, Vol 11, Iss 17, p 3645 (2023)
This paper deals with two types of systems of second-order differential equations with parameters: coupled systems with the boundary conditions of the Sturm–Liouville type and classical systems with Dirichlet boundary conditions. We discuss an Ambo
Externí odkaz:
https://doaj.org/article/3565354ea24942468af0226e34eb1fb5
Publikováno v:
Mathematical Modelling and Analysis, Vol 26, Iss 3, Pp 358-371 (2021)
This research concerns the existence and location of solutions for coupled system of differential equations with Lidstone-type boundary conditions. Methodology used utilizes three fundamental aspects: upper and lower solutions method, degree theory a
Externí odkaz:
https://doaj.org/article/cb0b8b2c9c7545618acc5d52bf94e746
Autor:
Feliz Minhós, Rui Carapinha
Publikováno v:
Electronic Journal of Qualitative Theory of Differential Equations, Vol 2020, Iss 86, Pp 1-14 (2020)
This paper considers two-point higher order impulsive boundary value problems, with a strongly nonlinear fully differential equation with an increasing homeomorphism. It is stressed that the impulsive effects are defined by very general functions, th
Externí odkaz:
https://doaj.org/article/4b9e2ab4614e416290562961dc8d409b
Publikováno v:
Electronic Journal of Qualitative Theory of Differential Equations, Vol 2020, Iss 91, Pp 1-17 (2020)
This paper deals with impulsive problems consisting of second order differential equation with impulsive effects depending implicitly on the solution and with rather general nonlocal boundary conditions. The arguments are based on the lower and upper
Externí odkaz:
https://doaj.org/article/5b52363590a7489d8dd71bd6ef6d862e
Publikováno v:
Frontiers in Applied Mathematics and Statistics, Vol 7 (2021)
Externí odkaz:
https://doaj.org/article/3ea8bdd5202f48e199665cc73b96779d
Autor:
Feliz Minhós, Rui Carapinha
Publikováno v:
Journal of Function Spaces, Vol 2021 (2021)
In this paper, we consider a first-order coupled impulsive system of equations with functional boundary conditions, subject to the generalized impulsive effects. It is pointed out that this problem generalizes the classical boundary assumptions, allo
Externí odkaz:
https://doaj.org/article/20c0e1c014b74328b974fa002d128b66
Autor:
Feliz Minhós, Nuno Oliveira
Publikováno v:
Axioms, Vol 10, Iss 3, p 222 (2021)
This work concerns with the solvability of third-order periodic fully problems with a weighted parameter, where the nonlinearity must verify only a local monotone condition and no periodic, coercivity or super or sublinearity restrictions are assumed
Externí odkaz:
https://doaj.org/article/c5e8d00509e640d9b2d0dc40b8985b00