A quadratic rational point on a nonhyperelliptic genus four Jacobian
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filed under:
SFBKolloquium
Hang Xue (z.Z. MPIM Bonn)
What 


When 
May 12, 2016 from 03:30 pm to 04:30 pm 
Where  Mainz, 05432 (Hilbertraum) 
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Abstract: We construct a canonical quadratic rational point on a
nonhyperelliptic genus four Jacobian and show that it generates the
MordellWeil group of the universal Jacobian. We also study how the point
degenerates on a hyperelliptic Jacobian. We will finish with some unsolved
problems related to this point.