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Colmez conjectured a formula relating the Faltings height of CM abelian varieties to a certain linear combination of log derivatives of $L$-functions. In this paper, we study the case of unitary CM fields and by studying the class functions…

Number Theory · Mathematics 2018-03-08 Solly Parenti

The Colmez conjecture relates the Faltings height of an abelian variety with complex multiplication by the ring of integers of a CM field $E$ to logarithmic derivatives of certain Artin $L$--functions at $s=0$. In this paper, we prove that…

Number Theory · Mathematics 2016-07-05 Adrian Barquero-Sanchez , Riad Masri

The Colmez conjecture, proposed by Colmez, is a conjecture expressing the Faltings height of a CM abelian variety in terms of some linear combination of logarithmic derivatives of Artin L-functions. The aim of this paper to prove an…

Number Theory · Mathematics 2021-11-19 Xinyi Yuan , Shou-Wu Zhang

In this paper, we consider some CM fields which we call of dihedral type and compute the Artin $L$-functions associated to all CM types of these CM fields. As a consequence of this calculation, we see that the Colmez conjecture in this case…

Number Theory · Mathematics 2017-11-09 Tonghai Yang , Hongbo Yin

In an article published in 1993, P. Colmez formulated a remarkable conjecture, which asserts that the Faltings height of a CM abelian variety can be computed as a linear combination of logarithmic derivatives of Artin $L$-functions. Noting…

Number Theory · Mathematics 2026-03-31 Vincent Maillot , Damian Rössler

We prove that assuming the Colmez conjecture and the ``no Siegel zeros" conjecture, the stable Faltings height of a CM abelian variety over a number field is less than or equal to the logarithm of the root discriminant of the field of…

Number Theory · Mathematics 2021-11-02 Xunjing Wei

This is an expository article on the averaged version of Colmez's conjecture, relating Faltings heights of CM abelian varieties to Artin L-functions. It is based on the author's lectures at the Current Developments in Mathematics conference…

Number Theory · Mathematics 2018-12-05 Benjamin Howard

We give a new proof of a slightly weaker form of a theorem of P. Colmez. This theorem gives a formula for the Faltings height of abelian varieties with complex multiplication by a C.M. field whose Galois group over $\bf Q$ is abelian; it…

Algebraic Geometry · Mathematics 2007-05-23 Kai Koehler , Damian Roessler

We prove a collection of results involving Colmez's periods and the Colmez Conjecture. Using Colmez's theory of periods of CM abelian varieties, we propose a definition for the height of a partial CM-type and prove that the Colmez…

Number Theory · Mathematics 2026-01-23 Roy Zhao

Let $G$ be a transitive subgroup of $S_d$ and $E$ be a CM field of degree $2d$ with a maximal totally real $G$-field. If the Galois group of the Galois closure of $E$ is isomorphic to the wreath product of $C_2$ and $G$, then we say that…

Number Theory · Mathematics 2019-02-25 Adrian Barquero-Sanchez , Riad Masri , Frank Thorne

In this work we prove a new Northcott property for the Faltings height. Namely we show, assuming the Colmez Conjecture and the Artin Conjecture, that there are finitely many CM abelian varieties over the complex numbers of a fixed dimension…

Number Theory · Mathematics 2017-09-20 Lucia Mocz

Let M be the Shimura variety associated with the group of spinor similitudes of a rational quadratic space over of signature (n,2). We prove a conjecture of Bruinier-Kudla-Yang, relating the arithmetic intersection multiplicities of special…

Number Theory · Mathematics 2017-10-03 Fabrizio Andreatta , Eyal Z. Goren , Benjamin Howard , Keerthi Madapusi Pera

We survey Colmez's theory and conjecture about the Faltings height and a product formula for the periods of abelian varieties with complex multiplication, along with the function field analog developed by the authors. In this analog,…

Algebraic Geometry · Mathematics 2020-09-11 Urs Hartl , Rajneesh Kumar Singh

Colmez conjectured a product formula for periods of abelian varieties with complex multiplication by a field K, analogous to the standard product formula in algebraic number theory. He proved this conjecture up to a rational power of 2 for…

Number Theory · Mathematics 2015-03-03 Andrew Obus

We study abelian varieties and K3 surfaces with complex multiplication defined over number fields of fixed degree. We show that these varieties fall into finitely many isomorphism classes over an algebraic closure of the field of rational…

Algebraic Geometry · Mathematics 2019-02-20 Martin Orr , Alexei N. Skorobogatov

Under some technical assumptions of a global nature, we establish the weight part of Serre's conjecture for mod $p$ Galois representations for CM fields that are tamely ramified and sufficiently generic at $p$.

Number Theory · Mathematics 2025-09-24 Daniel Le , Bao V. Le Hung

We develop Kummer theory for algebraic function fields in finitely many transcendental variables. We consider any finitely generated Kummer extension (possibly, over a cyclotomic extension) of an algebraic function field, and describe the…

Number Theory · Mathematics 2024-07-16 Félix Baril Boudreau , Antonella Perucca

Let $K$ be a number field, $A/K$ be an absolutely simple abelian variety of CM type, and $\ell$ be a prime number. We give explicit bounds on the degree over $K$ of the division fields $K(A[\ell^n])$, and when $A$ is an elliptic curve we…

Number Theory · Mathematics 2015-08-13 Davide Lombardo

Based on results obtained in a companion paper [MSRI preprint 1997-002], we construct groups of special $S$--units for function fields of characteristic $p>0$, and show that they satisfy Gras--type Conjectures. We use these results in order…

Number Theory · Mathematics 2016-09-07 Cristian D. Popescu

In this paper, we study the length of the $2$-class field towers and the structure of the Galois groups $\mathrm{Gal}(\mathcal{L}(K_n)/K_n)$ of the maximal unramified $2$-extensions of the layers $K_n$ of the cyclotomic…

Number Theory · Mathematics 2024-05-30 Mohamed Mahmoud Chems-Eddin , Abdelkader Zekhnini , Abdelmalek Azizi
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