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SUMMARY:Emmanuel Lecouturier (Yau Mathematical Sciences Center and Tsinghu
 a University (Beijing))
DTSTART:20210317T160000Z
DTEND:20210317T170000Z
DTSTAMP:20260418T064150Z
UID:LNTS/33
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/LNTS/33/">On
  an analogue of a conjecture of Sharifi for imaginary quadratic fields</a>
 \nby Emmanuel Lecouturier (Yau Mathematical Sciences Center and Tsinghua U
 niversity (Beijing)) as part of London number theory seminar\n\n\nAbstract
 \nWe explore a relation between the cohomology of certain Bianchi 3-folds\
 , modulo some Eisenstein ideal\, to the arithmetic of imaginary quadratic 
 fields.\nFor instance\, in the case of Euclidean imaginary quadratic field
 s\, we get a relation between modular symbols and cup-products of elliptic
  units.\nThis is similar to conjectures of Sharifi for classical modular c
 urves\, relating modular symbols to cup-product of cyclotomic units. \nThi
 s is work in progress with Jun Wang.\n
LOCATION:https://researchseminars.org/talk/LNTS/33/
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