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pro vyhledávání: '"Raul Naulin"'
Autor:
Raul Naulin
Publikováno v:
Electronic Journal of Differential Equations, Vol Conference, Iss 06, Pp 225-241 (2001)
In this paper we give conditions for the existence of a dichotomy for the impulsive equation $$displaylines{ mu(t,varepsilon) x'= A(t)x, ; t eq t_k,cr x(t_k^+ )= C_k x(t_k^-),, }$$ where $mu(t,varepsilon)$ is a positive function such that $limmu(t,va
Externí odkaz:
https://doaj.org/article/89a8dd15b2ad42de8fd6996684d864f0
Autor:
Raul Naulin, Carmen J. Vanegas
Publikováno v:
Electronic Journal of Differential Equations, Vol 1998, Iss 33, Pp 1-12 (1998)
In this paper, we give criteria for instability and asymptotic instability for the null solution to the non-autonomous system of difference equations $$ y(t+1)=A(t)y(t) + f(t,y(t)),quad f(t,0)=0,, $$ when the system $x(t+1)=A(t)x(t)$ is unstable. In
Externí odkaz:
https://doaj.org/article/25fe17eedd8344648b1916721000cba6
Autor:
Rafael Avis, Raul Naulin
Publikováno v:
Electronic Journal of Differential Equations, Vol 1997, Iss 16, Pp 1-7 (1997)
This article shows that the zero solution to the system
Externí odkaz:
https://doaj.org/article/feaf8caf0baa4c19a5c1fafbdec161eb
Autor:
Raul Naulin, Jorge González-Gunmán
Publikováno v:
Journal of mathematical biology. 33(2)
In this paper a model of bovine brucellosis spread is analyzed. This model consider four epidemiological classes: susceptibles, aborting infectious, infectious carriers and immune by vaccination. The per capita death rates of susceptibles, aborting a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9177a8709f24d50f9876e21166a5a62
https://pubmed.ncbi.nlm.nih.gov/7868992
https://pubmed.ncbi.nlm.nih.gov/7868992
Akademický článek
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Autor:
Lolimar Díaz, Raúl Naulin
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 24, Iss 8, Pp 549-562 (2000)
The construction of a variation of constants formula for the difference equation with advanced arguments y(n+1)=A(n)y(n)+B(n)y(g(n))+f(n), g(n)≥n+1, is given for specific sequential spaces.
Externí odkaz:
https://doaj.org/article/87257766d7e84c7eb989dd6dcd853c35
Autor:
Raúl Naulin
Publikováno v:
Le Matematiche, Vol 54, Iss 1, Pp 123-138 (1999)
In this paper by using the notion of discrete dichotomies, an asymptotic representation of Φ, the fundamental matrix of the linear difference equation y(n + 1) = (A(n) + B(n))y(n) is given.
Externí odkaz:
https://doaj.org/article/8fe80da31feb4ff095e94d3c1c8989dc