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单词 MordellCurve
释义

Mordell curve


A Mordell curveMathworldPlanetmath is an elliptic curveMathworldPlanetmath E/K, for some fieldK, which admits a model by a Weierstrass equation of the form:

y2=x3+k,kK

Examples:

  1. 1.

    Let E1/:y2=x3+2, this is a Mordellcurve with Mordell-Weil group E1()and generated by (-1,1).

  2. 2.

    Let E2/:y2=x3+109858299531561, thenE2()/35. Seehttp://math.bu.edu/people/alozano/TorsionPlanetmathPlanetmathPlanetmath.htmlgeneratorsPlanetmathPlanetmathPlanetmathPlanetmathPlanetmathhere.

  3. 3.

    In general, a Mordell curve of the form y2=x3+n2 hastorsion group isomorphicPlanetmathPlanetmathPlanetmath to /3 generated by(0,n).

  4. 4.

    Let E3/:y2=x3+496837487681 then this isa Mordell curve with E3()8. Seehttp://math.bu.edu/people/alozano/Mordell.htmlgeneratorshere.

  5. 5.

    http://www.maths.nott.ac.uk/personal/pmxtow/mordellc.htmHereyou can find a list of the minimal-known positive and negative kfor Mordell curves of given rank, and the Mordell curves withmaximum rank known (see BS-D conjecture).

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