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Nov 5, 2010 at 13:52 comment added David Lehavi @Charles: sadly I can only answer from my sieve-like-memory, but to some extent yes - see e.g. onlinelibrary.wiley.com/doi/10.1002/cpa.3160420403/pdf If I recall correctly the fact that the Abelian surface in question is not principally polarized was a huge issue for years, because people tried various principally polarized ones, which all give "equally good" invariant, but not the ideal ones (it's detailed in the linked paper).
Nov 5, 2010 at 12:35 comment added Charles Siegel Does the group law play nicely with the physics on the surface?
Nov 4, 2010 at 6:56 history answered David Lehavi CC BY-SA 2.5