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SUMMARY:Giuseppe Negro (University of Birmingham)
DTSTART:20201021T160000Z
DTEND:20201021T170000Z
DTSTAMP:20260423T021114Z
UID:HAeS/2
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/HAeS/2/">Sha
 rp estimates for the wave equation via the Penrose transform</a>\nby Giuse
 ppe Negro (University of Birmingham) as part of Harmonic analysis e-semina
 rs\n\n\nAbstract\nIn 2004\, Foschi found the best constant\, and the extre
 mizing functions\,  for the Strichartz inequality for the wave equation wi
 th data in the Sobolev space  $\\Hdot^{1/2}\\times\\Hdot^{-1/2}(\\R^3)$. H
 e also formulated a conjecture\,  concerning the extremizers to this Stric
 hartz inequality in all spatial  dimensions $d\\ge 2$. We disprove such co
 njecture for even $d$\, but we provide evidence to support it for odd $d$.
  The proofs use the conformal  compactification of the Minkowski space-tim
 e given by the Penrose transform.\n
LOCATION:https://researchseminars.org/talk/HAeS/2/
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