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when toggle format what by license comment
Feb 2, 2013 at 23:25 comment added Qingyun I do not know the background of this equation, the person who asked me this problem is working in algebraic geometry which I know nothing about. You answer is very helpful, are these the only solutions?
Feb 1, 2013 at 13:05 history answered Uwe Franz CC BY-SA 3.0