h.jinv

来自「强大的数学工具包」· JINV 代码 · 共 24 行

                               * * * * * * *
                               *   jinv    *
                               * * * * * * *

        "j- invariant"
        SYNTAX: X = jinv(E)

        E is an expression whose value is an elliptic curve over Q,
        Z/pZ (where p is a prime), GF(2^n) or a number field.

        X is assigned the j-invariant of E.


        Example 1: (correct)

                jinv(EC(8, 9))


        Example 2: (incorrect)

                jinv(123 + 4)

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