Zobrazeno 1 - 10
of 15
pro vyhledávání: '"María José Muñoz-Bouzo"'
Publikováno v:
Investment Management & Financial Innovations, Vol 2, Iss 2 (2005)
Externí odkaz:
https://doaj.org/article/5aea84a274044b50a24dd06bb61885b0
Publikováno v:
Advances in Operator Theory. 5:994-1013
As a starting point we assume to have a continuous frame in a Hilbert space with respect to a measure space. This frame inherits a unitary structure from a unitary representation of a locally compact abelian group in the Hilbert space. In this settin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fe4b45a2797b4c67973d7addde4b54e
https://doi.org/10.1007/s43036-020-00061-x
https://doi.org/10.1007/s43036-020-00061-x
Publikováno v:
Numerical Functional Analysis and Optimization. 41:685-709
A regular generalized sampling theory in some structured T-invariant subspaces of a Hilbert space H, where T denotes a bounded invertible operator in H, is established in this paper. This is done b...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4ad6708039f4e13f75d022be75c0ef9
https://doi.org/10.1080/01630563.2019.1667827
https://doi.org/10.1080/01630563.2019.1667827
Publikováno v:
IEEE Transactions on Information Theory. 62:2203-2212
The relevance in a sampling theory of $U$ -invariant subspaces of a Hilbert space $\mathcal {H}$ , where $U$ denotes a unitary operator on $\mathcal {H}$ , is nowadays a recognized fact. Indeed, shift-invariant subspaces of $L^{2}(\mathbb {R})$ becom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e9bccdde0fa49b0918bd2bc9debd3bd
https://doi.org/10.1109/tit.2016.2531086
https://doi.org/10.1109/tit.2016.2531086
Publikováno v:
Applied and Computational Harmonic Analysis. 39:173-184
Recently, a sampling theory for infinite dimensional U -invariant subspaces of a separable Hilbert space H where U denotes a unitary operator on H has been obtained. Thus, uniform average sampling for shift-invariant subspaces of L 2 ( R ) becomes a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7c5119915b1ac400b83861b2fe8120a
https://doi.org/10.1016/j.acha.2014.09.008
https://doi.org/10.1016/j.acha.2014.09.008
Publikováno v:
Analysis and Applications, ISSN 0219-5305, 2015-05, Vol. 13, No. 3
Archivo Digital UPM
Universidad Politécnica de Madrid
Archivo Digital UPM
Universidad Politécnica de Madrid
The aim of this article is to derive a sampling theory in U-invariant subspaces of a separable Hilbert space ℋ where U denotes a unitary operator defined on ℋ. To this end, we use some special dual frames for L2(0, 1), and the fact that any U-inv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55012491d550221533207949d385bf8e
https://doi.org/10.1142/s0219530514500213
https://doi.org/10.1142/s0219530514500213
Successive differences on a sequence of data help to discover some smoothness features of this data. This was one of the main reasons for rewriting the classical interpolation formula in terms of such data differences. The aim of this paper is to mim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::843e67862f6842ceeb12cb8382230c4b
http://arxiv.org/abs/1709.03893
http://arxiv.org/abs/1709.03893
Publikováno v:
Journal of Mathematical Analysis and Applications. 380:607-627
In this paper some results about regular multivariate generalized sampling in the L p setting ( 1 ⩽ p ⩽ ∞ ) are proven. Thus, stable multivariate regular sampling formulas are derived for L p shift-invariant spaces V Φ p , i.e., the L p -closu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4162df648fbbf776e23da6ad2ed5a45b
https://doi.org/10.1016/j.jmaa.2011.03.013
https://doi.org/10.1016/j.jmaa.2011.03.013
Publikováno v:
Stochastic Analysis and Applications. 22:1327-1339
In this note an irregular sampling expansion for bandlimited harmonizable processes is obtained by employing contour integral techniques in the vector-valued analytic functions setting. In so doing, we use the integral representation of a harmonizabl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c737feacb925d5c5eda18c29cd79abf0
https://doi.org/10.1081/sap-200026468
https://doi.org/10.1081/sap-200026468
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 25, Iss 11, Pp 709-715 (2001)
The classical Kramer sampling theorem is, in the subject of self-adjoint boundary value problems, one of the richest sources to obtain sampling expansions. It has become very fruitful in connection with discrete Sturm-Liouville problems. In this pape
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a668384840e441ec636ed760d82b5d27
https://doi.org/10.1155/s0161171201005385
https://doi.org/10.1155/s0161171201005385