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77
The GL2 main conjecture for elliptic curves without complex multiplication
 Publ. I.H.E.S. 101 (2005
"... The main conjectures of Iwasawa theory provide the only general method known at present for studying the mysterious relationship between purely arithmetic problems and the special values of complex Lfunctions, typified by the conjecture of Birch and Swinnerton ..."
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Cited by 69 (15 self)
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The main conjectures of Iwasawa theory provide the only general method known at present for studying the mysterious relationship between purely arithmetic problems and the special values of complex Lfunctions, typified by the conjecture of Birch and Swinnerton
On the Equivariant Tamagawa Number Conjecture for Tate Motives, Part II
 DOCUMENTA MATH.
, 2006
"... Let K be any finite abelian extension of Q, k any subfield of K and r any integer. We complete the proof of the equivariant Tamagawa Number Conjecture for the pair (h0(Spec(K))(r), Z[Gal(K/k)]). ..."
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Cited by 48 (12 self)
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Let K be any finite abelian extension of Q, k any subfield of K and r any integer. We complete the proof of the equivariant Tamagawa Number Conjecture for the pair (h0(Spec(K))(r), Z[Gal(K/k)]).
BlochKato conjecture and Main Conjecture of Iwasawa theory for Dirichlet characters
, 2002
"... The Tamagawa number conjecture proposed by S. Bloch and K. Kato describes the “special values ” of Lfunctions in terms of cohomological data. The main conjecture of Iwasawa theory describes a padic Lfunction in terms of the structure of modules for the Iwasawa algebra. We give a complete proof of ..."
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The Tamagawa number conjecture proposed by S. Bloch and K. Kato describes the “special values ” of Lfunctions in terms of cohomological data. The main conjecture of Iwasawa theory describes a padic Lfunction in terms of the structure of modules for the Iwasawa algebra. We give a complete proof of both conjectures (up to the prime 2) for Lfunctions attached to Dirichlet characters. We use the insight of Kato and B. PerrinRiou that these two conjectures can be seen as incarnations of the same mathematical content. In particular, they imply each other. By a bootstrapping process using the theory of Euler systems and explicit reciprocity laws, both conjectures are reduced to the analytic class number formula. Technical problems with primes dividing the order of the character are avoided by using the correct cohomological formulation of the main conjecture.
On the Equivariant Tamagawa Number Conjecture for Abelian Extensions of a Quadratic Imaginary Field
 DOCUMENTA MATH.
, 2006
"... Let k be a quadratic imaginary field, p a prime which splits in k/Q and does not divide the class number hk of k. Let L denote a finite abelian extension of k and let K be a subextension of L/k. In this article we prove the ppart of the Equivariant Tamagawa Number Conjecture for the pair (h 0 (Spe ..."
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Cited by 20 (1 self)
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Let k be a quadratic imaginary field, p a prime which splits in k/Q and does not divide the class number hk of k. Let L denote a finite abelian extension of k and let K be a subextension of L/k. In this article we prove the ppart of the Equivariant Tamagawa Number Conjecture for the pair (h 0 (Spec(L)), Z[Gal(L/K)]).
Equivariant Weierstrass Preparation and Values of Lfunctions at Negative Integers
 DOCUMENTA MATH.
, 2002
"... We apply an equivariant version of the padic Weierstrass Preparation Theorem in the context of possible noncommutative generalizations of the power series of Deligne and Ribet. We then consider CM abelian extensions of totally real fields and by combining our earlier considerations with the known ..."
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Cited by 16 (4 self)
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We apply an equivariant version of the padic Weierstrass Preparation Theorem in the context of possible noncommutative generalizations of the power series of Deligne and Ribet. We then consider CM abelian extensions of totally real fields and by combining our earlier considerations with the known validity of the Main Conjecture of Iwasawa theory we prove, modulo the conjectural vanishing of certain µinvariants, a (corrected version of a) conjecture of Snaith and the ‘rank zero component ’ of Kato’s Generalized Iwasawa Main Conjecture for Tate motives of strictly positive weight. We next use the validity of this case of Kato’s conjecture to prove a conjecture of Chinburg, Kolster, Pappas and Snaith and also to compute explicitly the Fitting ideals of certain natural étale cohomology groups in terms of the values of Dirichlet Lfunctions at negative integers. This computation improves upon results of Cornacchia and Østvær, of Kurihara and of Snaith, and, modulo the validity of a certain aspect of the QuillenLichtenbaum Conjecture, also verifies a finer and more general version of a well known conjecture of Coates and Sinnott.
Equivariant epsilon constants, discriminants and Étale cohomology
 Proc. London Math. Soc
, 2001
"... this paper was written when the second named author 2 visited the Institute for Mathematics of the University of Augsburg in July 1999. He would like to thank Juergen Ritter for the warm hospitality shown him during this (and many other) visits ..."
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this paper was written when the second named author 2 visited the Institute for Mathematics of the University of Augsburg in July 1999. He would like to thank Juergen Ritter for the warm hospitality shown him during this (and many other) visits
Equivariant BlochKato conjecture and nonabelian Iwasawa main conjecture
 in Proceedings of the International Congress of Mathematicians, Vol. II (Beijing, 2002), 149–162, Higher Ed
"... In this talk we explain the relation between the (equivariant) BlochKato conjecture for special values of Lfunctions and the Main Conjecture of (nonabelian) Iwasawa theory. On the way we will discuss briefly the case of Dirichlet characters in the abelian case. We will also discuss how “twisting ” ..."
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In this talk we explain the relation between the (equivariant) BlochKato conjecture for special values of Lfunctions and the Main Conjecture of (nonabelian) Iwasawa theory. On the way we will discuss briefly the case of Dirichlet characters in the abelian case. We will also discuss how “twisting ” in the nonabelian case would allow to reduce the general conjecture to the case of number fields. This is one the main motivations for a nonabelian Main
Proof of the Main Conjecture of Noncommutative Iwasawa Theory for Totally Real Number Fields in Certain Cases
, 2008
"... Fix an odd prime p. Let G be a compact padic Lie group containing a closed, normal, prop subgroup H which is abelian and such that G/H is isomorphic to the additive group of padic integersZp. First we assume that H is finite and compute the Whitehead group of the Iwasawa algebra,Λ(G), of G. We al ..."
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Cited by 15 (0 self)
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Fix an odd prime p. Let G be a compact padic Lie group containing a closed, normal, prop subgroup H which is abelian and such that G/H is isomorphic to the additive group of padic integersZp. First we assume that H is finite and compute the Whitehead group of the Iwasawa algebra,Λ(G), of G. We also prove some results about certain localisation ofΛ(G) needed in Iwasawa theory. Let F be a totally real number field and let F ∞ be an admissible padic Lie extension of F with Galois group G. The computation of the Whitehead groups are used to show that the Main Conjecture for the extension F∞/F can be deduced from certain congruences between abelian padic zeta functions of Delige and Ribet. We prove these congruences with certain assumptions on G. This gives a proof of the Main Conjecture in many interesting cases such asZp⋊Zpextensions.
Characteristic elements in noncommutative Iwasawa theory
, 2003
"... Let p be a prime number, which, for simplicity, we shall always assume odd. In the Iwasawa theory of an elliptic curve E over a number field k one has to distinguish between curves which do or do not admit complex multiplication (CM). For CMelliptic curves their deep arithmetic properties and the li ..."
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Cited by 13 (4 self)
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Let p be a prime number, which, for simplicity, we shall always assume odd. In the Iwasawa theory of an elliptic curve E over a number field k one has to distinguish between curves which do or do not admit complex multiplication (CM). For CMelliptic curves their deep arithmetic properties and the link between their Selmer group and special values of their HasseWeil Lfunctions are not only described by the (onevariable) main conjecture corresponding to the cyclotomic Zpextension kcyc of k, but also by the (twovariable) main conjecture corresponding to the extension k ∞ = k(Ep∞) which arises by adjoining the ppower division points Ep ∞ of E. Moreover, both conjectures are proven by Rubin [36] in the case that k is imaginary quadratic and E has CM by the ring of integers Ok of k. Also for nonCM elliptic curves one would like to at least formulate a main conjecture over the trivialzing extension k∞, but for lack of both an algebraic as well as analytic padic Lfunction this has not been achieved. The aim of this paper is to establish, under certain conditions, the existence of an algebraic padic Lfunction, viz as an element of the first Kgroup K1(ΛT) ∼ = Λ ×