Zobrazeno 1 - 10 of 10 pro vyhledávání: '"El Hassan Zerouali"'
1
Akademický článek
A note on the general moment problem
Autor: Hamza El Azhar, Abdelouahab Hanine, El Hassan Zerouali
Publikováno v: Opuscula Mathematica, Vol 44, Iss 3, Pp 359-372 (2024)
In this note we show that given an indeterminate Hamburger moment sequence, it is possible to perturb the first moment in such way that the obtained sequence remains an indeterminate Hamburger moment sequence. As a consequence we prove that every seq
Externí odkaz: https://doaj.org/article/5f420c85e3f047c195262ef068a31b76
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2
Akademický článek
Asymptotic expansion of large eigenvalues for a class of unbounded Jacobi matrices
Autor: Ayoub Harrat, El Hassan Zerouali, Lech Zielinski
Publikováno v: Opuscula Mathematica, Vol 40, Iss 2, Pp 241-270 (2020)
We investigate a class of infinite tridiagonal matrices which define unbounded self-adjoint operators with discrete spectrum. Our purpose is to establish the asymptotic expansion of large eigenvalues and to compute two correction terms explicitly.
Externí odkaz: https://doaj.org/article/274e383548b34b3691cd97d0fa1239ad
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5
On the localized weak Bishop’s property
Autor: Belkassem Seddoug, Haddou Khachane, El Hassan Zerouali, Bouazza El Wahbi
Publikováno v: Annals of Functional Analysis. 11:970-980
This note is devoted to a weaker version of Bishop property $$\beta$$ at a given complex number. We show in particular that this notion is a regularity and hence the induced spectrum satisfies all classical properties of the spectrum.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4360c0456fd3ec5d3d7cfb3042891801
https://doi.org/10.1007/s43034-020-00063-z
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8
Complex Moment Problem And Recursive Relations
Autor: Idrissi, K., El hassan Zerouali
Publikováno v: Scopus-Elsevier
We introduce a new strategy in solving the truncated complex moment problem. To this aim we investigate recursive doubly indexed sequences and their characteristic polynomials. A characterization of recursive doubly indexed \emph{moment} sequences is
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7f3d2ffd18e10c7824f24a1ab1533b2
http://www.scopus.com/inward/record.url?eid=2-s2.0-85065317867&partnerID=MN8TOARS
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9
Problème de moments avec applications et estimations du spectre discret des opérateurs définis par des matrices infinies non bornées
Autor: Harrat, Ayoub
Publikováno v: Analyse classique [math.CA]. Université du Littoral Côte d'Opale; Université Mohammed V (Rabat). Faculté des sciences, 2020. Français. ⟨NNT : 2020DUNK0563⟩
In this thesis, we first provide a concrete solution to the, almost all, quintic TCMP (that is, when m = 5). We also study the cardinality of the minimal representing measure. Based on the bi-variate recurrence sequence properties with some Curto-Fia
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2592::8dda798834a95efbf8717ea0c611fbd8
https://tel.archives-ouvertes.fr/tel-03123140
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10
Moment problem with applications and discrete spectrum estimations of certain operators defined by unbounded Jacobi matrices
Autor: Harrat, Ayoub
Publikováno v: Analyse classique [math.CA]. Université du Littoral Côte d'Opale; Université Mohammed V (Rabat). Faculté des sciences, 2020. Français. ⟨NNT : 2020DUNK0563⟩
In this thesis, we first provide a concrete solution to the, almost all, quintic TCMP (that is, when m = 5). We also study the cardinality of the minimal representing measure. Based on the bi-variate recurrence sequence properties with some Curto-Fia
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::8dda798834a95efbf8717ea0c611fbd8
https://theses.hal.science/tel-03123140
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