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hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorZARRABI, Mohamed
dc.contributor.authorEL-FALLAH, Omar
dc.date.accessioned2024-04-04T02:51:53Z
dc.date.available2024-04-04T02:51:53Z
dc.date.issued2005
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/192011
dc.description.abstractEnLet $A$ 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.isofr
dc.subjectEquation de Bezout
dc.subjectAlgèbres de Banach
dc.subjectEstimation de la norme d'inverses
dc.subjectEquation de Bezout.
dc.titleEstimations des Solutions de l'équation de Bezout dans les Algèbres de Beurling analytiques
dc.typeArticle de revue
dc.subject.halMathématiques [math]/Analyse fonctionnelle [math.FA]
bordeaux.journalMathematica Scandinavica
bordeaux.page307-319
bordeaux.volume96
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-00288491
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00288491v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.title=Estimations%20des%20Solutions%20de%20l'%C3%A9quation%20de%20Bezout%20dans%20les%20Alg%C3%A8bres%20de%20Beurling%20analytiques&rft.atitle=Estimations%20des%20Solutions%20de%20l'%C3%A9quation%20de%20Bezout%20dans%20les%20Alg%C3%A8bres%20de%20Beurling%20analytiques&rft.jtitle=Mathematica%20Scandinavica&rft.date=2005&rft.volume=96&rft.spage=307-319&rft.epage=307-319&rft.au=ZARRABI,%20Mohamed&EL-FALLAH,%20Omar&rft.genre=article


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