Estimations des Solutions de l'équation de Bezout dans les Algèbres de Beurling analytiques
hal.structure.identifier | Institut de Mathématiques de Bordeaux [IMB] | |
dc.contributor.author | ZARRABI, Mohamed | |
dc.contributor.author | EL-FALLAH, Omar | |
dc.date.accessioned | 2024-04-04T02:51:53Z | |
dc.date.available | 2024-04-04T02:51:53Z | |
dc.date.issued | 2005 | |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/192011 | |
dc.description.abstractEn | Let $A$ be a unitary commutative Banach algebra with unit $e$. For $f\in A$ we denote by $\hat f$ the Gelfand transform of $f$ defined on $\hat A$, the set of maximal ideals of $A$. Let $(f_1, ... , f_n)\in A^n$ be such that $\displaystyle \sum _{i=1}^n \|f_i\|^2 \leq 1$. We study here the existence of solutions $(g_1, ... , g_n)\in A^n$ to the Bezout equation $f_1g_1+ ... +f_ng_n=e$, whose norm is controlled by a function of $n$ and $\delta=\inf_{\chi\in\hat A}\left(|\hat f_1(\chi)|^2+...+|\hat f_n(\chi)|^2\right)^{1/2}$. \par We treat this problem for the analytic Beurling algebras and their quotient by closed ideals. The general Banach algebras with compact Gelfand transform are also considered. | |
dc.language.iso | fr | |
dc.subject | Equation de Bezout | |
dc.subject | Algèbres de Banach | |
dc.subject | Estimation de la norme d'inverses | |
dc.subject | Equation de Bezout. | |
dc.title | Estimations des Solutions de l'équation de Bezout dans les Algèbres de Beurling analytiques | |
dc.type | Article de revue | |
dc.subject.hal | Mathématiques [math]/Analyse fonctionnelle [math.FA] | |
bordeaux.journal | Mathematica Scandinavica | |
bordeaux.page | 307-319 | |
bordeaux.volume | 96 | |
bordeaux.hal.laboratories | Institut de Mathématiques de Bordeaux (IMB) - UMR 5251 | * |
bordeaux.institution | Université de Bordeaux | |
bordeaux.institution | Bordeaux INP | |
bordeaux.institution | CNRS | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-00288491 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-00288491v1 | |
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