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Continuous and discrete uncertainty principles

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Multi angle
Authors : Torrésani, Bruno (Author of the conference)
CIRM (Publisher )

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Abstract : Uncertainty principles go back to the early years of quantum mechanics. Originally introduced to describe the impossibility for a function to be sharply localized in both the direct and Fourier spaces, localization being measured by variance, it has been generalized to many other situations, including different representation spaces and different localization measures.
In this talk we first review classical results on variance uncertainty inequalities (in particular Heisenberg, Robertson and Breitenberger inequalities). We then focus on discrete (and in particular finite-dimensional) situations, where variance has to be replaced with more suitable localization measures. We then present recent results on support and entropic inequalities, describing joint localization properties of vector expansions with respect to two frames.

Keywords: uncertainty principle - variance of a function - Heisenberg inequality - support inequalities - entropic inequalities

MSC Codes :
26D20 - Other analytical inequalities
42C40 - Wavelets and other special systems
94A12 - Signal theory (characterization, reconstruction, filtering, etc.)
94A17 - Measures of information, entropy

    Information on the Video

    Film maker : Hennenfent, Guillaume
    Language : English
    Available date : 10/03/15
    Conference Date : 23/01/15
    Series : Special events ; 30 Years of Wavelets
    arXiv category : Analysis of PDEs ; Statistics Theory
    Mathematical Area(s) : Analysis and its Applications
    Format : MP4 (.mp4) - HD
    Video Time : 00:26:15
    Targeted Audience : Researchers
    Download : https://videos.cirm-math.fr/2015_01_23_Torresani.mp4

Information on the Event

Event Title : 30 years of wavelets / 30 ans des ondelettes
Event Organizers : Feichtinger, Hans G. ; Torrésani, Bruno
Dates : 23/01/15 - 24/01/15
Event Year : 2015
Event URL : https://www.chairejeanmorlet.com/1523.html

Citation Data

DOI : 10.24350/CIRM.V.18710403
Cite this video as: Torrésani, Bruno (2015). Continuous and discrete uncertainty principles. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.18710403
URI : http://dx.doi.org/10.24350/CIRM.V.18710403

Bibliography



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