Results 1 to 10 of about 463 (44)

The effective Shafarevich conjecture for abelian varieties of ${\text {GL}_{2}}$-type

open access: yesForum of Mathematics, Sigma, 2021
In this article we establish the effective Shafarevich conjecture for abelian varieties over ${\mathbb Q}$ of ${\text {GL}_2}$-type. The proof combines Faltings’ method with Serre’s modularity conjecture, isogeny estimates and results from Arakelov ...
Rafael von Känel
doaj   +1 more source

Chow groups and L-derivatives of automorphic motives for unitary groups, II.

open access: yesForum of Mathematics, Pi, 2022
In this article, we improve our main results from [LL21] in two directions: First, we allow ramified places in the CM extension $E/F$ at which we consider representations that are spherical with respect to a certain special maximal compact subgroup, by ...
Chao Li, Yifeng Liu
doaj   +1 more source

Point counting for foliations over number fields

open access: yesForum of Mathematics, Pi, 2022
Let${\mathbb M}$ be an affine variety equipped with a foliation, both defined over a number field ${\mathbb K}$. For an algebraic $V\subset {\mathbb M}$ over ${\mathbb K}$, write $\delta _{V}$ for the maximum of the degree and log-height of V.
Gal Binyamini
doaj   +1 more source

Heights on stacks and a generalized Batyrev–Manin–Malle conjecture

open access: yesForum of Mathematics, Sigma, 2023
We define a notion of height for rational points with respect to a vector bundle on a proper algebraic stack with finite diagonal over a global field, which generalizes the usual notion for rational points on projective varieties.
Jordan S. Ellenberg   +2 more
doaj   +1 more source

Hensel minimality II: Mixed characteristic and a diophantine application

open access: yesForum of Mathematics, Sigma, 2023
In this paper, together with the preceding Part I [10], we develop a framework for tame geometry on Henselian valued fields of characteristic zero, called Hensel minimality. It adds to [10] the treatment of the mixed characteristic case.
Raf Cluckers   +3 more
doaj   +1 more source

Analytic torsion of Hirzebruch surfaces [PDF]

open access: yes, 2004
Using different forms of the arithmetic Riemann-Roch theorem and the computations of Bott-Chern secondary classes, we compute the analytic torsion and the height of Hirzebruch ...
Mourougane, Christophe
core   +5 more sources

THE EXPLICIT MORDELL CONJECTURE FOR FAMILIES OF CURVES

open access: yesForum of Mathematics, Sigma, 2019
In this article we prove the explicit Mordell Conjecture for large families of curves. In addition, we introduce a method, of easy application, to compute all rational points on curves of quite general shape and increasing genus. The method bases on some
SARA CHECCOLI   +2 more
doaj   +1 more source

Modular invariants and isogenies [PDF]

open access: yes, 2019
We provide explicit bounds on the difference of heights of the $j$-invariants of isogenous elliptic curves defined over $\overline{\mathbb{Q}}$. The first one is reminiscent of a classical estimate for the Faltings height of isogenous abelian varieties ...
Pazuki, Fabien
core   +2 more sources

SINGULARITIES OF THE BIEXTENSION METRIC FOR FAMILIES OF ABELIAN VARIETIES

open access: yesForum of Mathematics, Sigma, 2018
In this paper we study the singularities of the invariant metric of the Poincaré bundle over a family of abelian varieties and their duals over a base of arbitrary dimension.
JOSÉ IGNACIO BURGOS GIL   +2 more
doaj   +1 more source

SPECIAL CURVES AND POSTCRITICALLY FINITE POLYNOMIALS

open access: yesForum of Mathematics, Pi, 2013
We study the postcritically finite maps within the moduli space of complex polynomial dynamical systems. We characterize rational curves in the moduli space containing an infinite number of postcritically finite maps, in terms of critical orbit relations,
MATTHEW BAKER, LAURA DE MARCO
doaj   +1 more source

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