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Jan 7, 2010 at 17:06 comment added Bjorn Poonen Essentially the same question was asked earlier on this site: mathoverflow.net/questions/6676/…
Dec 7, 2009 at 17:43 comment added Dror Speiser It is a non a trivial fact that the torsion points on an elliptic curve in Weierstrass form have integer coordinates. If the curve is not in the Weierstrass form, it can have rational torsion points that are not integral. I suggest reading Washington's "Elliptic Curves: Number Theory and Cryptography". It is very detailed and well written.
Dec 7, 2009 at 17:42 answer added John Cremona timeline score: 15
Dec 6, 2009 at 12:12 vote accept amateur algebraist
Dec 6, 2009 at 12:07 history edited amateur algebraist CC BY-SA 2.5
Fixed formula
Dec 6, 2009 at 7:54 answer added Kevin Buzzard timeline score: 9
Dec 6, 2009 at 7:03 answer added Kevin O'Bryant timeline score: 3
Dec 6, 2009 at 0:32 comment added Andrew Critch In general, you should indicate clearly what is the "main" part of your question.
Dec 5, 2009 at 23:49 history edited Ilya Nikokoshev CC BY-SA 2.5
paragraph breaks, retitle, retag
Dec 5, 2009 at 22:36 answer added Steve Huntsman timeline score: 4
Dec 5, 2009 at 22:26 comment added amateur algebraist Thanks! I have one curve which is of rank 4 and torsion subgroup isomorphic to trivial abelian group so I would like to know some method to prove the solutions I found are the only one.
Dec 5, 2009 at 22:12 comment added Mariano Suárez-Álvarez Your question about curves of rank 0 has positive answer, more or less by definition.
Dec 5, 2009 at 22:09 history asked amateur algebraist CC BY-SA 2.5