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In this note, we propose the modular height of an abelian variety defined over a field of finite type over Q. Moreover, we prove its finiteness property.

Number Theory · Mathematics 2007-05-23 Atsushi Moriwaki

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 develop a Hodge theoretic invariant for families of projective manifolds that measures the potential failure of an Arakelov-type inequality in higher dimensions, one that naturally generalizes the classical Arakelov inequality over…

Algebraic Geometry · Mathematics 2022-10-12 Sándor J Kovács , Behrouz Taji

We give optimal estimates on the variation of the differential and modular heights within an isogeny class of abelian varieties defined over the function field of a curve (in any characteristic). We also prove a parallelogram inequality for…

Number Theory · Mathematics 2025-03-19 Richard Griffon , Samuel Le Fourn , Fabien Pazuki

Canonical heights and Arakelov geometry on semi-abelian varieties. In this paper, we propose a construction of the canonical heights on an extension of an abelian variety by the multiplicative group, in the framework of Arakelov geometry.…

Algebraic Geometry · Mathematics 2007-05-23 Antoine Chambert-Loir

We give two kinds of generalizations of Arakelov type inequalities for higher dimensional families. These results give higher dimensional generalizations (in both fibers and bases) of the weakly boundedness in Par\v{s}in-Arakelov's…

Algebraic Geometry · Mathematics 2023-02-22 Junchao Shentu

We compare general inequalities between invariants of number fields and invariants of abelian varieties over number fields. On the number field side, we remark that there is only a finite number of non-CM number fields with bounded…

Number Theory · Mathematics 2016-10-07 Fabien Pazuki

In this paper we give a lower bound for the codimension of the Andreotti-Mayer loci in the moduli space of principally polarized complex abelian varieties. We also present a conjecture on this codimension.

Algebraic Geometry · Mathematics 2007-05-23 Ciro Ciliberto , Gerard van der Geer

We provide a characterization of almost ordinary abelian varieties over finite fields, and use this characterization to provide lower bounds for the sizes of some almost ordinary isogeny classes.

Number Theory · Mathematics 2019-11-13 Abhishek Oswal , Ananth N. Shankar

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

We explicitly bound the Faltings height of a curve over Q polynomially in its Belyi degree. Similar bounds are proven for three other Arakelov invariants: the discriminant, Faltings' delta invariant and the self-intersection of the…

Algebraic Geometry · Mathematics 2014-05-20 Ariyan Javanpeykar , Peter Bruin

We establish an Arakelov-type inequality for a morphism $f \colon (X,\Delta) \to S$, where $(X,\Delta)$ is a simple normal crossing semi-log canonical pair and $S$ is a smooth projective variety. As a consequence, we derive a bound on the…

Algebraic Geometry · Mathematics 2026-05-26 Junchao Shentu

We study the rationality properties of the moduli space $\mathcal{A}_g$ of principally polarised abelian $g$-folds over $\mathbb{Q}$ and apply the results to arithmetic questions. In particular we show that any principally polarised abelian…

Algebraic Geometry · Mathematics 2025-03-26 Daniel Loughran , Gregory Sankaran

We use Arakelov theory to define a height on divisors of degree zero on a hyperelliptic curve over a global field, and show that this height has computably bounded difference from the N\'eron-Tate height of the corresponding point on the…

Number Theory · Mathematics 2014-10-29 David Holmes

We study the arithmetic aspects of the finite group of extensions of abelian varieties defined over a number field. In particular, we establish relations with special values of L-functions and congruences between modular forms.

Number Theory · Mathematics 2015-06-29 Matthew A. Papanikolas , Niranjan Ramachandran

Using integral $p$-adic Hodge theory, Kato and Koshikawa define a generalization of the Faltings height of an abelian variety to motives defined over a number field. Assuming the adelic Mumford-Tate conjecture, we prove a finiteness…

Number Theory · Mathematics 2025-10-14 Alice Lin

We lower bound the Faltings height of an abelian variety over a number field by the sum of its injectivity diameter and the norm of its bad reduction primes. It leads to an unconditional bound on the rank of Mordell-Weil groups. Assuming…

Number Theory · Mathematics 2016-10-07 Fabien Pazuki

In this paper we give new explicit formulas for Faltings' $\delta$-invariant in terms of integrals of theta functions, and we deduce an explicit lower bound for $\delta$ only in terms of the genus and an explicit upper bound for the…

Algebraic Geometry · Mathematics 2016-12-06 Robert Wilms

Inspired by the work of Cherry, we introduce and study a new notion of Brody hyperbolicity for rigid analytic varieties over a non-archimedean field $K$ of characteristic zero. We use this notion of hyperbolicity to show the following…

Algebraic Geometry · Mathematics 2022-08-09 Ariyan Javanpeykar , Alberto Vezzani

We get a new inequality on the Hodge number $h^{1,1}(S)$ of fibred algebraic complex surfaces $S$, which is a generalization of an inequality of Beauville. Our inequality implies the Arakelov type inequalities due to Arakelov, Faltings,…

Algebraic Geometry · Mathematics 2013-03-13 Jun Lu , Sheng-Li Tan , Fei Yu , Kang Zuo
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