Download Arithmetic theory of elliptic curves: lectures given at the by J. Coates, R. Greenberg, K.A. Ribet, K. Rubin, C. Viola PDF

By J. Coates, R. Greenberg, K.A. Ribet, K. Rubin, C. Viola

This quantity includes the multiplied models of the lectures given by way of the authors on the C. I. M. E. tutorial convention held in Cetraro, Italy, from July 12 to 19, 1997. The papers gathered listed below are extensive surveys of the present study within the mathematics of elliptic curves, and likewise comprise numerous new effects which can't be chanced on in different places within the literature. as a result of readability and style of exposition, and to the historical past fabric explicitly incorporated within the textual content or quoted within the references, the amount is easily suited for study scholars in addition to to senior mathematicians.

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Additional resources for Arithmetic theory of elliptic curves: lectures given at the 3rd session of the Centro internazionale matematico estivo

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The inclusion Im(nK) Im(XK) can be seen by noting that in defining KK, one can assume that a E E ( K ) 8 ($,/Z,) has been written as a = a @ (l/pt), where a E 3 ( m ) . Here F is the formal group for E , m is the maximal ideal for K . Then, since 3 ( X ) is divisible, one can choose b E 3 ( X ) so that ptb = a. The 1-cocycle then has values in C, = F(liT)[pw]. Alternatively, the equality I m ( r c ~ )= h ( k ) can be verified quite directly by using the Tate parametrization for E . If E has nonsplit, multiplicative reduction, then the above assertion still holds for p odd.

Proof. Let Bv = H"(K, E[pm]), where K = (F,),. is unramified and finitely decomposed in F,/F, K is the unramified Z,extension of Fv (in fact, the only +,-extension of F,). The group B, is = isomorphic to (Qp/+p)e x (a finite group), where 0 5 e 5 2. Let run Gal(K/(F,),,,), which is isomorphic to H,, topologically generated by y,,,, say. Then + ker(g,) + coker(s,) + coker(h,). Therefore, we must study ker(h,), coker(h,), and ker(g,), which we do in a sequence of lemmas. 1. The kernel of h, is finite and has bounded order as n varies.

C I I I 1 I , I 1 I I1 The surjectivity of the first row follows from Poitou-Tate Duality, which gives H2(M,C,) = 0 for any finite extension M of F,. )Thus, ker(bvn) 2 ker(dun). u, where u is a unit of F, and nu is a uniformizing parameter. One can verify easily that the group of units in K is divisible by p. By using the Tate parametrization one can show that B,/(Bv)div is cyclic of order c(P) and that r, acts trivially on this group. ,)( = cp) for all n 2 0. B,, might be infinite. In fact, (Bu)div= pp- if pp C F,; (Bu)div = 0 if p, F,.

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