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SUMMARY:Darío Mena Arias (Universidad de Costa Rica)
DTSTART:20210125T170000Z
DTEND:20210125T175000Z
DTSTAMP:20260423T024836Z
UID:anpdews/47
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/anpdews/47/"
 >Sparse bounds for the Discrete Spherical Maximal Function</a>\nby Darío 
 Mena Arias (Universidad de Costa Rica) as part of HA-GMT-PDE Seminar\n\n\n
 Abstract\nWe prove sparse bounds for the spherical maximal operator of Mag
 yar\, Stein and Wainger. The bounds are conjecturally sharp\, and contain 
 an endpoint estimate. The new method of proof is inspired by ones by Bourg
 ain and Ionescu\, is very efficient\, and has not been used in the proof o
 f sparse bounds before. The Hardy-Littlewood Circle method is used to deco
 mpose the multiplier into major and minor arc components. The efficiency a
 rises as one only needs a single estimate on each element of the decomposi
 tion.\n
LOCATION:https://researchseminars.org/talk/anpdews/47/
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