{"id":3609,"date":"1994-01-01T00:00:00","date_gmt":"1994-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/1994\/01\/01\/sistemas-cooperativos\/"},"modified":"1994-01-01T00:00:00","modified_gmt":"1994-01-01T00:00:00","slug":"sistemas-cooperativos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/matematicas\/sistemas-cooperativos\/","title":{"rendered":"Sistemas cooperativos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Marcela Molina Meyer <\/strong><\/h2>\n<p>En esta tesis se caracteriza el principio del maximo para sistemas elipticos cooperativos lu=au+f, donde l es una matriz diagonal de operadores elipticos y a satisface aij 0 para i\u00f1j; en terminos de la existencia de una supersolucion, de operadores fuertemente positivos en espacios de banach ordenados y teoria espectral. Se aplican estos resultados al estudio de los problemas l =a +   y l = a , para positiva.  se demuestra que existe una solucion positiva (u,v) para el sistema no lineal lu=au+h(u) (para el caso de h concava y decreciente) si, y solo si, la solucion trivial es inestable. Ademas, se demuestra que en caso de existir es un atractor global para soluciones del parabolico asociado con datos iniciales positivos.  se demuestra que las soluciones positivas (u,v) convergen, cuando ambas difusividades convergen a cero, al equilibrio positivo de la cinetica pura y=ay+h(y), en subconjuntos compactos del dominio.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Sistemas cooperativos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Sistemas cooperativos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Marcela Molina Meyer <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1994<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li> Soria De Diego Fernando<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Francisco Bernis Carro <\/li>\n<li>Ken Brown (vocal)<\/li>\n<li>Jean Mawhin (vocal)<\/li>\n<li> Fraile Pelaez Jos\u00e9 Mar\u00eda (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Marcela Molina Meyer En esta tesis se caracteriza el principio del maximo para sistemas elipticos cooperativos lu=au+f, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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