Tuan

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Name Tuan
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Seen Jan 26 at 9:38
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Jacobian surface associated to an elliptic surface

apr 28 10 at 5:48 ulrich 6,750●1●13●23

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isogeny of elliptic curves

apr 7 10 at 17:28 Robin Chapman 14.5k●2●29●50

 
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Automorphism group of bi-elliptic surface

apr 12 10 at 2:36 VA 8,220●22●44

 

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Is the direct image of the structure sheaf on X isomorphic to the structure sheaf on Y when X->Y is flat and proper with connected fibers between smooth schemes over an algebraically closed field?

 

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