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UID:6544@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20210211T110000
DTEND;TZID=Europe/Paris:20210211T120000
DTSTAMP:20241120T201735Z
URL:https://www.i2m.univ-amu.fr/evenements/gluing-curves-along-their-torsi
 on-jeroen-sijsling/
SUMMARY:Jeroen Sijsling (Ulm University): Gluing curves along their torsion
  - Jeroen Sijsling
DESCRIPTION:Jeroen Sijsling: Let X (resp. Y) be a curve of genus 1 (resp. 2
 ) over a base field k whose characteristic does not equal 2. We give crite
 ria for the existence of a curve Z over k whose Jacobian is up to twist is
 ogenous to the products of the Jacobians of X and Y\, and call such a curv
 e a gluing of X and Y.\nWe also given two methods to determine the curve Z
 . The first uses interpolation\, and also determines the relevant twisting
  scalar. It can be used to find a Jacobian over QQ that admits a rational 
 70-torsion point. The second method is more geometrically inspired and exp
 loits the geometry of the Kummer surface of Y.This is joint work with Jero
 en Hanselman and Sam Schiavone.\nhttps://arxiv.org/abs/2005.03587\nLien Zo
 om : https://univ-amu-fr.zoom.us/j/92195848065?pwd=dEVoUmx1b1JUYTdERVZ1c
 1NPazN0QT09 \nMeeting ID : 921 9584 8065\nPasscode : voir mail\n\n \nSit
 e : https://sites.google.com/view/samuele-anni/home/s%C3%A9minaire-ati 
  \n\nDossier avec les vidéos et les présentations des exposés précé
 dents : https://amubox.univ-amu.fr/s/dew3ycyHKDDcotZ  \n[su_spacer size
 ="10"]
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 020/01/Jeroen_Sijsling.jpg
CATEGORIES:Séminaire,Arithmétique et Théorie de l’Information,Virtual
 event
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