Download PDF by J. Coates: Arithmetic Theory of Elliptic Curves: Lectures given at the

By J. Coates

ISBN-10: 0203645375

ISBN-13: 9780203645376

This quantity includes the improved types of the lectures given through the authors on the C. I. M. E. tutorial convention held in Cetraro, Italy, from July 12 to 19, 1997. The papers accumulated listed below are extensive surveys of the present study within the mathematics of elliptic curves, and likewise include numerous new effects which can't be chanced on somewhere else within the literature. because of readability and magnificence of exposition, and to the history fabric explicitly integrated within the textual content or quoted within the references, the quantity is definitely suited for learn scholars in addition to to senior mathematicians.

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Additional resources for Arithmetic Theory of Elliptic Curves: Lectures given at the Session of the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Cetaro, Italy, ... Mathematics / Fondazione C.I.M.E., Firenze)

Example text

On the other hand, H 2 ( H , C ) = 0 since H has pcohomological dimension 1. Then H2(G,C) = 0 if p is odd, and again has order 5 2 if P = 2. Thus, it is enough to study Let X = Gal(L,/M,), where L, is the maximal abelian pro-p extension of M,. 3 by studying the structure of X as a module for +,[[A x HI] = A[A], where A = B,[[H]] E Z,[[T]], with = h - 1. The results are due to Iwasawa. 66 Iwasawa theory for elliptic curves Ralph Greenberg > MZ. For any n 0, let Hn = H P ~Let . M, = The commutator subgroup of Gal(L,/M,) is (hpn - 1 ) X and so, if L, is the maximal abelian extension of Mn contained in L,, then Gal(L,/M,) 2 Hn x (x/(hpn - 1)X).

This is proved in Mazur's article [Mazl]. The crucial step is to show that E(F,)tor, is finite. 12) for a detailed proof of this helpful fact. (We will make use of it later. ) Using this, one then argues as follows. Let t = IE(F,)tor,l. Choose m so that rank(E(Fm)) is maximal. Then, for any P E E(F,), we have k P E E(Fm) for some k 3 1. Then g(kP) = k P for all g E Gal(F,/Fm). That is, g(P) - P is in E(F,)tor, and hence t(g(P) - P) = OE. This means that t P E E(Fm). Therefore, E(Fm), from which it follows that E(F,) is finitely generated.

Also, we have for n 0. It follows that r = t. One can also see A/(hpn - 1)A r Z~P" that XA-torsr Lim W,, where this inverse limit is defined by the norm maps > M; -+ M,X for m 2 n. , if ppm $Z M,), then XA-tors= 0. Thus, X At. To get more precise information about the structure of X , choose n large enough so that hpn - 1 annihilates At/X. We then have 67 finite, we can prove (1). For if go is a topological generator of A x H , then the torsion subgroup of X/(go - $(go))X is isomorphic to the kernel of go -$(go) acting on At/X 2 W.

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Arithmetic Theory of Elliptic Curves: Lectures given at the Session of the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Cetaro, Italy, ... Mathematics / Fondazione C.I.M.E., Firenze) by J. Coates


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