h.rkbsd

来自「强大的数学工具包」· RKBSD 代码 · 共 17 行

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                               *   rkbsd   *
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        "rank via Birch and Swinnerton-Dyer conjecture"
        SYNTAX: r = rkbsd(E)

        E is an expression whose value is an elliptic curve over Q.
        
        r is assigned the rank of the Mordell-Weil group of E, 
        computed via the Birch and Swinnerton-Dyer conjecture.

        
        Example 1: (correct)
                
                rk( EC( 1, 0, 0, 1, 2 ) )