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H 1 Wavelet theory, coorbit spaces and ramifications

Auteurs : Feichtinger, Hans G. (Auteur de la Conférence)
CIRM (Editeur )

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    Résumé : Coorbit theory was developed in the late eighties as a unifying principle covering (possible non-)orthogonal frame expansions in the wavelet and in the time-frequency context. Very much in the spirit of " coherent frames " or also reproducing kernels for a Moebius invariant Banach space of analytic functions one can describe a family of function spaces associated with a given integrable and irreducible group representation on a Hilbert space by its generalized wavelet transform, and obtain (among others) atomic decomposition results for the resulting spaces. The theory was flexible enough to cover also more recent examples, such as voice transforms related to the Blaschke group or the spaces (and frames) related to the shearlet transform.
    As time permits I will talk also on the role of Banach frames and the usefulness of Banach Gelfand triples, especially the one based on the Segal algebra $S_0(G)$, which happens to be a modulation space, in fact the minimal among all time-frequency invariant non-trivial function spaces.

    Keywords: wavelet theory - time-frequency analysis - modulation spaces - Banach-Gelfand-triples - Toeplitz operators - atomic decompositions - function spaces - shearlet transform - Blaschke group

    Codes MSC :
    42C10 - Fourier series in special orthogonal functions (Legendre polynomials, Walsh functions, etc.)
    42C15 - General harmonic expansions, frames
    42C40 - Wavelets and other special systems
    43-XX - Abstract harmonic analysis [For other analysis on topological and Lie groups, see 22Exx]
    46Exx - Linear function spaces and their duals [See also 30H05, 32A38, 46F05] [For function algebras, see 46J10]

      Informations sur la Vidéo

      Réalisateur : Hennenfent, Guillaume
      Langue : Anglais
      Date de publication : 16/03/15
      Date de captation : 24/01/15
      Collection : Special events ; 30 Years of Wavelets ; Analysis and its Applications
      Format : quicktime ; audio/x-aac
      Durée : 00:34:19
      Domaine : Analysis and its Applications ; Numerical Analysis & Scientific Computing
      Audience : Chercheurs ; Doctorants , Post - Doctorants
      Download : https://videos.cirm-math.fr/2015-01-24_Feichtinger.mp4

    Informations sur la rencontre

    Nom de la rencontre : 30 years of wavelets / 30 ans des ondelettes
    Organisateurs de la rencontre : Feichtinger, Hans G. ; Torrésani, Bruno
    Dates : 23/01/15 - 24/01/15
    Année de la rencontre : 2015
    URL Congrès : http://feichtingertorresani.weebly.com/3...

    Citation Data

    DOI : 10.24350/CIRM.V.18718203
    Cite this video as: Feichtinger, Hans G. (2015). Wavelet theory, coorbit spaces and ramifications. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.18718203
    URI : http://dx.doi.org/10.24350/CIRM.V.18718203


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