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regular seminar Ross Paterson (University of Bristol)
at: 16:00 - 17:00 KCL, Strand room: S3.30 abstract: | If E/Q is an elliptic curve, and d is a squarefree integer, then the 2-torsion modules of E and its quadratic twist E_d are isomorphic. In particular their 2-Selmer groups can be made to lie in the same space. Poonen-Rains provide a heuristic model for the behaviour of these 2-Selmer groups individually, as E varies, but how independent are they? We'll present results in this direction. Keywords: |