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SUMMARY:Soumya Sankar (Ohio State University)
DTSTART:20210708T163000Z
DTEND:20210708T173000Z
DTSTAMP:20260422T053601Z
UID:SFUQNTAG/32
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/SFUQNTAG/32/
 ">Counting elliptic curves with a rational N-isogeny</a>\nby Soumya Sankar
  (Ohio State University) as part of SFU NT-AG seminar\n\n\nAbstract\nThe c
 lassical problem of counting elliptic curves with a rational N-isogeny can
  be phrased in terms of counting rational points on certain moduli stacks 
 of elliptic curves. Counting points on stacks poses various challenges\, a
 nd I will discuss these along with a few ways to overcome them. I will als
 o talk about the theory of heights on stacks developed in recent work of E
 llenberg\, Satriano and Zureick-Brown and use it to count elliptic curves 
 with an N-isogeny for certain N. The talk assumes no prior knowledge of st
 acks and is based on joint work with Brandon Boggess.\n
LOCATION:https://researchseminars.org/talk/SFUQNTAG/32/
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