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DTSTART:20230326T030000
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BEGIN:VEVENT
DTSTAMP:20260424T143447Z
UID:1697108400@ist.ac.at
DTSTART:20231012T130000
DTEND:20231012T150000
DESCRIPTION:Speaker: Peter Koymans\nhosted by Tim Browning \nAbstract: For 
 any abelian group A\, we prove an asymptotic formula for the number of A-e
 xtensions K/Q of bounded discriminant such that the associated norm one to
 rus R_{K/Q}^1 G_m satisfies weak approximation. We will discuss how to par
 ametrise abelian extensions in a convenient way so that the problem reduce
 s to the estimation of a certain character sum. We will then estimate this
  character sum using Siegel--Walfisz and the large sieve. This is joint wo
 rk with Nick Rome.
LOCATION:Heinzel Seminar Room (I21.EG.101)\, Office Building West\, ISTA\, 
 ISTA
ORGANIZER:birgit.oosthuizen-noczil@ist.ac.at 
SUMMARY:Peter Koymans: Weak approximation on the norm one torus
URL:https://talks-calendar.ista.ac.at/events/4403
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