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R. Greenberg (2008)
Introduction to Iwasawa theory for elliptic curves
R. Greenberg, V. Vatsal (1999)
On the Iwasawa invariants of elliptic curvesInventiones mathematicae, 142
(2004)
Iwasawa Theory for Elliptic Curves with Cyclic Isogenies
Suppose that E 1 and E 2 are elliptic curves defined over ℚ and p is an odd prime where E 1 and E 2 have good ordinary reduction. In this paper, we generalize a theorem of Greenberg and Vatsal [3] and prove that if E 1[p i ] and E 2[p i ] are isomorphic as Galois modules for i = µ(E 1), then µ(E 1) ≤ µ(E 2). If the isomorphism holds for i = µ(E 1) + 1, then both the curves have same µ-invariants. We also discuss one numerical example.
Bulletin of the Brazilian Mathematical Society, New Series – Springer Journals
Published: Sep 1, 2010
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