Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Osvaldo Osuna Castro"'
Publikováno v:
Revista Integración, Vol 38, Iss 2 (2021)
En este trabajo consideramos modelos con tratamiento de radiaciónperiódico contra el cáncer que describen la dinámica de las poblaciones celulares en un tumor. Establecemos la existencia de órbitas periódicas, utilizandola teoría de los sistem
Externí odkaz:
https://doaj.org/article/62972b8bf40549499134b56a986fc946
Publikováno v:
Revista Integración, Vol 36, Iss 1 (2018)
In this work, we establish the existence of periodic orbits for a seasonal saturated epidemiological model of a population consisting of susceptible, infectious and quarantined individuals (an SIQS model). To do so, we use Leray-Schauder degree theor
Externí odkaz:
https://doaj.org/article/95b729f8be574200803d306a348387c9
Publikováno v:
Revista Integración, Vol 36, Iss 1 (2018)
Understanding why there are multiple equilibrium points when R0 < 1 has been one of the main motivations to analyze existence of a backward bifurcation in epidemiological models. Existence of multiple endemic states is usually associated to branches
Externí odkaz:
https://doaj.org/article/459b4a812b2d4492b521f82e9efa5497
Publikováno v:
Revista Integración, Vol 38, Iss 2 (2020)
In this work, we considered models with periodic radiation cancer treatment which describe the dynamics of cell populations in a tumor.This may also be used to consider dynamics of healthy tissue under periodic radiation exposure. We establish the ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8714837dc5b59d37fa4a5a3a79d605cf
https://doi.org/10.18273/revint.v38n2-2020001
https://doi.org/10.18273/revint.v38n2-2020001
Autor:
Juan Bosco Frías Medina, Israel Moreno Mejía, Brenda Leticia De La Rosa Navarro, Mustapha Lahyane, Osvaldo Osuna Castro
Publikováno v:
Revista Matemática Iberoamericana. 31:1131-1140
The aim of this paper is to give a geometric characterization of the finite generation of the Cox rings of anticanonical rational surfaces. This characterization is encoded in the finite generation of the effective monoid. Furthermore, we prove that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bfdf7fbed6efa1ce622bb95a7f12c83
https://doi.org/10.4171/rmi/878
https://doi.org/10.4171/rmi/878
Autor:
Gioia Failla, Osvaldo Osuna-Castro, Jesús Adrian Cerda Rodriguez, Mustapha Lahyane, Israel Moreno-Mejia
Publikováno v:
Analele Universitatii "Ovidius" Constanta - Seria Matematica. 21:229-240
We prove the finite generation of the monoid of effective divisor classes on a smooth projective rational surface X endowed with an anticanonical divisor such that all its irreducible components are of multiplicity one except one which has multiplici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80a69d24aa65670d784c83f336d6a79f
https://doi.org/10.2478/auom-2013-0055
https://doi.org/10.2478/auom-2013-0055
Erratum to 'A geometric criterion for the finite generation of the Cox rings of projective surfaces'
Autor:
Juan Bosco Frías Medina, Mustapha Lahyane, Israel Moreno Mejía, Osvaldo Osuna Castro, Brenda Leticia De La Rosa Navarro
Publikováno v:
Revista Matemática Iberoamericana. 33:375-376
We add a reasonable hypothesis in Theorem 1 in Rev. Mat. Iberoam. 31 (2015) no. 4, 1131–1140, in order to make it correct.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74b3e474ea8bcb6a7ca150d88fcec189
https://doi.org/10.4171/rmi/941
https://doi.org/10.4171/rmi/941
We study surfaces in $\R^4$ whose tangent spaces have constant principal angles with respect to a plane. Using a PDE we prove the existence of surfaces with arbitrary constant principal angles. The existence of such surfaces turns out to be equivalen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9d37b9c2cb8d184c8876b9169ca1531
http://arxiv.org/abs/1105.1791
http://arxiv.org/abs/1105.1791
Autor:
Elmar Wagner, Osvaldo Osuna Castro
Publikováno v:
International Journal of Geometric Methods in Modern Physics. :1250012
We present other examples illustrating the operator-theoretic approach to invariant integrals on quantum homogeneous spaces developed by Kürsten and the second author. The quantum spaces are chosen such that their coordinate algebras do not admit bo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d37afce834844f833ef2e84b3ec4f73
https://doi.org/10.1142/s0219887812500120
https://doi.org/10.1142/s0219887812500120
Autor:
Shaday Guerrero Flores
Publikováno v:
Universidad Michoacana de San Nicolás de Hidalgo
UMSNH
Repositorio Institucional de la Universidad Michoacana de San Nicolás de Hidalgo
UMSNH
Repositorio Institucional de la Universidad Michoacana de San Nicolás de Hidalgo
Instituto de Física y Matemáticas. Facultad de Ciencias Físico Matemáticas. Unidad Morelia del Instituto de Matemáticas de la UNAM. Programa Conjunto de Doctorado en Matemáticas In this work, we consider a family of SIQRS epidemiological models
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::d99157ede3e3cbc24b0e43110efe488b
http://bibliotecavirtual.dgb.umich.mx:8083/xmlui/handle/DGB_UMICH/6290
http://bibliotecavirtual.dgb.umich.mx:8083/xmlui/handle/DGB_UMICH/6290