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UID:6539@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20210215T100000
DTEND;TZID=Europe/Paris:20210215T110000
DTSTAMP:20241120T201734Z
URL:https://www.i2m.univ-amu.fr/evenements/an-uncertainty-principle-for-th
 e-vaserstein-distance-xavier-massaneda/
SUMMARY:Xavier Massaneda (Universitat de Barcelona): An uncertainty princip
 le for the Vaserstein distance
DESCRIPTION:Xavier Massaneda: Recent results of Sagiv and Steinerberger\, i
 mproved by Cavalletti and Farinelli\, quantify the following uncertainty p
 rinciple: for a continuous function f with mean zero\, either the size of 
 its zero set or the cost of transporting the mass of the positive part of 
 f to its negative part must be big. We will discuss these results and also
  provide a sharp upper estimate of the transport cost of the positive part
  of an eigenfunction of the Laplacian. This proves a conjecture of Steiner
 berger and implies a lower bound of the size of the nodal set of the eigen
 function. \nEn visio (Zoom) \n&nbsp\;\n
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 016/03/Xavier_Massaneda.jpg
CATEGORIES:Séminaire,Analyse et Géométrie,Virtual event
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