On standardized models of isogenous elliptic curves
نویسنده
چکیده
Let E, E′ be isogenous elliptic curves over Q given by standardized Weierstrass models. We show that (in the obvious notation) a1 = a1, a ′ 2 = a2, a ′ 3 = a3 and, moreover, that there are integers t, w such that a4 = a4 − 5t and a6 = a6 − b2t − 7w, where b2 = a1 + 4a2.
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ورودعنوان ژورنال:
- Math. Comput.
دوره 74 شماره
صفحات -
تاریخ انتشار 2005