Abstract:A second-order many-body method developed from the many-body scheme introduced by Schneider et a1 is applied to elastic electron-helium scattering. Three models derived from the method are discussed and results for differential, integrated and total cross sections are presented at energies ranging from 30 to 200 eV and compared with absolute experimental data.
“…4, it is proved in [37], [60] that (E5) In [37], improving upon previous works [35], [36], Kolyvagin proves that, if y ∈ E(K) is of infinite order, then…”
Section: Euler Systems and Descentmentioning
confidence: 74%
“…(E5) E : "Heegner points" on Jacobians of modular (or Shimura) curves ( [6], [9], [23], [24], [25], [35], [36], [37], [38], [39], [40], [41]) defined over ring class fields of an imaginary quadratic field…”
Section: Euler Systems -Classical Examplesmentioning
In this article we give a survey of two relatively recent developments in number theory: (1) the method of "Euler systems"; (2) new ideas and techniques coming from p-adic cohomology (or, rather, p-adic Hodge theory).The common thread underlying these two themes is a relationship (still largely conjectural) between I would like to thank R. Kučera, K. Rubin and the referee for helpful comments on the first version of this paper.
A brief historyWhat we now call "Euler systems" is a new descent method developed in pioneering works of F. Thaine, K. Rubin and V.A. Kolyvagin. Their most spectacular results are summed up in the following
“…4, it is proved in [37], [60] that (E5) In [37], improving upon previous works [35], [36], Kolyvagin proves that, if y ∈ E(K) is of infinite order, then…”
Section: Euler Systems and Descentmentioning
confidence: 74%
“…(E5) E : "Heegner points" on Jacobians of modular (or Shimura) curves ( [6], [9], [23], [24], [25], [35], [36], [37], [38], [39], [40], [41]) defined over ring class fields of an imaginary quadratic field…”
Section: Euler Systems -Classical Examplesmentioning
In this article we give a survey of two relatively recent developments in number theory: (1) the method of "Euler systems"; (2) new ideas and techniques coming from p-adic cohomology (or, rather, p-adic Hodge theory).The common thread underlying these two themes is a relationship (still largely conjectural) between I would like to thank R. Kučera, K. Rubin and the referee for helpful comments on the first version of this paper.
A brief historyWhat we now call "Euler systems" is a new descent method developed in pioneering works of F. Thaine, K. Rubin and V.A. Kolyvagin. Their most spectacular results are summed up in the following
“…It plays a crucial role in Kolyvagin's work in [3] and [4], where he applies Euler systems to elliptic curves and thereby provides evidence for Birch and Swinnerton-Dyer Conjecture.…”
Section: Gives a Duality Between H I (G F A) And H 2−i (G F A ∨ )mentioning
We present an explicit description, in terms of central simple algebras, of a cup-product map which occurs in the statement of local Tate duality for Galois modules of prime order p. Given cocycles f and g, we construct a central simple algebra of dimension p 2 whose class in the Brauer group gives the cup-product f ∪ g. This algebra is as small as possible.
“…The Heegner hypotheses are a set of conditions about how the rational primes of bad reduction of an elliptic curve split in an imaginary quadratic field. The work of Kolyvagin on the Birch and Swinnerton-Dyer Conjecture (see [19,20]) is based on the existence of suitable quadratic twists of elliptic curves in which the twisting discriminant satisfies prescribed Heegner hypotheses. Combining his work with an important theorem of Gross and Zagier, who showed that the height of the Heegner point is a multiple of the derivative of the L-series of the elliptic curve at 1, it follows that the Birch and Swinnerton-Dyer Conjecture holds when the analytic rank is at most 1.…”
We quantify a recent theorem of Wiles on class numbers of imaginary quadratic fields by proving an estimate for the number of negative fundamental discriminants down to −X whose class numbers are indivisible by a given prime and whose imaginary quadratic fields satisfy any given set of local conditions. This estimate matches the best results in the direction of the Cohen-Lenstra heuristics for the number of imaginary quadratic fields with class number indivisible by a given prime. This general result is applied to study rank 0 twists of certain elliptic curves.
BackgroundIdeal class numbers of imaginary quadratic fields have been studied since Gauss, who conjectured that for any given h, there are only finitely many negative fundamental discriminants D such that h(D) = h. The history of Gauss' Conjecture is rich. The conjecture was shown to be true by work of Heilbronn [13], who did not show how to find the imaginary quadratic fields with a given class number. Siegel [26] proved that h(−D) grows like |D| 1/2 , but did so ineffectively. In other words, for each > 0 he proved that for sufficiently large D there are positive constants c 1 and c 2 for which
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.