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Let p be an odd prime and let E be an elliptic curve defined over a quadratic imaginary field where p splits completely. Suppose E has supersingular reduction at primes above p. We define and study the fine double-signed residual Selmer…

Number Theory · Mathematics 2023-04-25 Parham Hamidi

Iwasawa theory of Heegner points on abelian varieties of GL_2 type has been studied by, among others, Mazur, Perrin-Riou, Bertolini and Howard. The purpose of this paper, the first in a series of two, is to describe extensions of some of…

Number Theory · Mathematics 2014-05-20 Matteo Longo , Stefano Vigni

This article is the first of a pair of articles dealing with the Iwasawa theory of modular forms of weight 1 and, more generally, of Artin representations satisfying certain conditions. The main results in this part analyze the structure of…

Number Theory · Mathematics 2018-06-15 R. Greenberg , V. Vatsal

We prove a connexity theorem for abelian varieties in characteristic $0$: if $X$ is an abelian variety and $V\rightarrow X$ and $W\rightarrow X$ two morphisms, then, under certain hypotheses, the fiber product of $V$ and $W$ over $X$ is…

alg-geom · Mathematics 2008-02-03 Olivier Debarre

In this short article we provide a proof of the Iitaka conjecture for algebraic fiber spaces over abelian varieties.

Algebraic Geometry · Mathematics 2016-08-04 Junyan Cao , Mihai Paun

In this note we show that any basic abelian variety with additional structures over an arbitrary algebraically closed field of characteristic $p>0$ is isogenous to another one defined over a finite field. We also show that the category of…

Number Theory · Mathematics 2016-02-24 Chia-Fu Yu

For an odd prime number $p$, we study the number of generators of the unramified Iwasawa modules of the maximal multiple $\mathbb{Z}_p$-extensions over Iwasawa algebra. In a previous paper of the authors, under several assumptions for an…

Number Theory · Mathematics 2021-07-16 Takashi Miura , Kazuaki Murakami , Keiji Okano , Rei Otsuki

We begin a systematic investigation of universal norms for $p$-adic representations in higher rank Iwasawa theory. After establishing the basic properties of the module of higher rank universal norms we construct an Iwasawa-theoretic…

Number Theory · Mathematics 2021-05-20 Dominik Bullach , Alexandre Daoud

Following Deligne and Ribet (`Values of abelian $L$-functions at negative integers over totally real fields.' Invent. Math. 59 (1980), 227-286) we prove that the `torsion congruences' (as introduced in our paper `Non-abelian pseudomeasures…

Number Theory · Mathematics 2008-07-24 Jürgen Ritter , Alfred Weiss

The equivariant `main conjecture' of Iwasawa theory is shown to hold for a Galois extension $K/k$ of number fields with Galois group an $l$-adic pro-$l$ Lie group of dimension 1 containing an abelian subgroup of index $l$, provided that…

Number Theory · Mathematics 2008-07-24 Jürgen Ritter , Alfred Weiss

For any compact $p$-adic Lie group $G$, the Iwasawa algebra $\Omega_G$ over finite field $\mathbb{F}_p$ is a complete noetherian semilocal algebra. It is shown that $\Omega_G$ is the dual algebra of an artinian coalgebra $C$. We induce a…

Rings and Algebras · Mathematics 2016-10-26 Zheng Fang , Feng Wei

We use Iwasawa theory, at a prime $p$ inert in a quadratic imaginary field $K$, to study the arithmetic properties of mock plectic invariants for elliptic curves of rank two. More precisely, under some minor technical assumptions, we prove…

Number Theory · Mathematics 2024-12-03 Michele Fornea , Lennart Gehrmann

We compare the Pontryagin duals of fine Selmer groups of two congruent $p$-adic Galois representations over admissible pro-$p$, $p$-adic Lie extensions $K_\infty$ of number fields $K$. We prove that in several natural settings the…

Number Theory · Mathematics 2022-11-21 Sören Kleine , Katharina Müller

Let $E/\mathbb{Q}$ an elliptic curve with good supersingular reduction at a prime $p\geq 5$, and $K$ an imaginary quadratic field such that the root number of $E$ over $K$ equals $-1$. When $p$ splits in $K$, Castella and Wan formulated the…

Number Theory · Mathematics 2026-05-05 Ashay Burungale , Kâzım Büyükboduk , Antonio Lei

The goal of this article is to obtain a proof of the Main conjectures of Iwasawa theory for rational elliptic curves over anticyclotomic extensions of imaginary quadratic fields, under mild arithmetic assumptions, both in the case where the…

Number Theory · Mathematics 2026-02-06 Massimo Bertolini , Matteo Longo , Rodolfo Venerucci

We investigate the behaviour of Tamagawa numbers of semistable principally polarised abelian varieties in extensions of local fields. In view of the Raynaud parametrisation, this translates into a purely algebraic problem concerning the…

Number Theory · Mathematics 2015-12-01 L. Alexander Betts , Vladimir Dokchitser

We show that for an odd prime p, the p-primary parts of refinements of the (imprimitive) non-abelian Brumer and Brumer-Stark conjectures are implied by the equivariant Iwasawa main conjecture (EIMC) for totally real fields. Crucially, this…

Number Theory · Mathematics 2018-08-06 Henri Johnston , Andreas Nickel

We study the average behaviour of the Iwasawa invariants for Selmer groups of elliptic curves, considered over anticyclotomic $\mathbb{Z}_p$-extensions in both the definite and indefinite settings. The results in this paper lie at the…

Number Theory · Mathematics 2024-06-18 Jeffrey Hatley , Debanjana Kundu , Anwesh Ray

In this article, we prove that the Zilber-Pink conjecture for abelian varieties over an arbitrary field of characteristic $0$ is implied by the same statement for abelian varieties over the algebraic numbers. More precisely, the conjecture…

Number Theory · Mathematics 2019-10-18 Fabrizio Barroero , Gabriel Andreas Dill

We consider the family of CM-fields which are pro-p p-adic Lie extensions of number fields of dimension at least two, which contain the cyclotomic Z_p-extension, and which are ramified at only finitely many primes. We show that the Galois…

Number Theory · Mathematics 2007-05-23 Yoshitaka Hachimori , Romyar Sharifi