Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Gennaro Infante"'
Autor:
Gennaro Infante, Serena Matucci
Publikováno v:
AIMS Mathematics, Vol 6, Iss 5, Pp 4860-4872 (2021)
We study the existence of positive solutions on the half-line of a second order ordinary differential equation subject to functional boundary conditions. Our approach relies on a combination between the fixed point index for operators on compact inte
Externí odkaz:
https://doaj.org/article/bd94431d873c4c66ba4d1937f388be6e
Autor:
Gennaro Infante
Publikováno v:
Mathematics, Vol 9, Iss 4, p 330 (2021)
We discuss the solvability of a fairly general class of systems of perturbed Hammerstein integral equations with functional terms that depend on several parameters. The nonlinearities and the functionals are allowed to depend on the components of the
Externí odkaz:
https://doaj.org/article/361b5b03c9714f5f85d733b0d8cf0ceb
Autor:
Gennaro Infante
Publikováno v:
Mathematics, Vol 9, Iss 1, p 4 (2020)
Motivated by recent interest on Kirchhoff-type equations, in this short note we utilize a classical, yet very powerful, tool of nonlinear functional analysis in order to investigate the existence of positive eigenvalues of systems of elliptic functio
Externí odkaz:
https://doaj.org/article/a186b689aabd439b938dffa9a0c1e757
Autor:
Gennaro Infante, P. Pietramala
Publikováno v:
Electronic Journal of Qualitative Theory of Differential Equations, Vol 2009, Iss 15, Pp 1-14 (2009)
We prove new results on the existence of positive solutions for some cantilever equation subject to nonlocal and nonlinear boundary conditions. Our main ingredient is the classical fixed point index.
Externí odkaz:
https://doaj.org/article/5e3ad8d9f9624898bba4c4d99891f2f4
Autor:
Gennaro Infante
Publikováno v:
Fixed Point Theory and Applications, Vol 2005, Iss 2, Pp 177-184 (2005)
We use the theory of fixed point index for weakly inward A-proper maps to establish the existence of positive solutions of some second-order three-point boundary value problems in which the highest-order derivative occurs nonlinearly.
Externí odkaz:
https://doaj.org/article/8d9503ea0fb84ba98eeef863a2f5cc9f
Autor:
Gennaro Infante, J. R. L. Webb
Publikováno v:
Abstract and Applied Analysis, Vol 2003, Iss 18, Pp 1047-1060 (2003)
We establish the existence of positive solutions of some m-point boundary value problems under weaker assumptions than previously employed. In particular, we do not require all the parameters occurring in the boundary conditions to be positive. Our r
Externí odkaz:
https://doaj.org/article/18518286840f43658111c2d7a331a83b
Autor:
Gennaro Infante, Paolamaria Pietramala
Publikováno v:
Nonlinear Analysis, Vol 19, Iss 3 (2014)
We study the existence of nonnegative solutions for a system of impulsive differential equations subject to nonlinear, nonlocal boundary conditions. The system presents a coupling in the differential equation and in the boundary conditions. The main
Externí odkaz:
https://doaj.org/article/0764d99a961a4bafaef298d90ef982ab
Publikováno v:
Mathematical Modelling and Analysis, Vol 18, Iss 5 (2013)
We study the existence of solutions for nonlinear first order impulsive systems with nonlocal initial conditions. Our approach relies in the fixed point principles of Schauder and Perov, combined with a vector approach that uses matrices that converg
Externí odkaz:
https://doaj.org/article/df73cf83f3f642a48a32fb05ba1dde4c
Publikováno v:
Journal of Function Spaces and Applications, Vol 2013 (2013)
Externí odkaz:
https://doaj.org/article/e7119f2d148a4409a4acb2acd855ba1b
Autor:
Gennaro Infante, Alessandro Calamai
Publikováno v:
Mathematical Methods in the Applied Sciences.
In this short note we prove, by means of classical fixed point index, an affine version of a Birkhoff--Kellogg type theorem in cones. We apply our result to discuss the solvability of a class of boundary value problems for functional differential equ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c706b0d713b28348e0a2518b2bee2075
https://doi.org/10.1002/mma.8665
https://doi.org/10.1002/mma.8665