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We prove a lower bound on the canonical height associated to polynomials over number fields evaluated at points with infinite forward orbit. The lower bound depends only on the degree of the polynomial, the degree of the number field, and…

Number Theory · Mathematics 2017-09-27 Nicole Looper

Let F and G be morphisms of degree at least 2 from P^N to P^N that are defined over the algebraic closure of Q. We define the arithmetic distance d(F,G) between F and G to be the supremum over all algebraic points P of |h_F(P)-h_G(P)|,…

Number Theory · Mathematics 2011-05-30 Shu Kawaguchi , Joseph H. Silverman

We show the existence of canonical heights of subvarieties for bounded sequences of morphisms and give some applications.

Algebraic Geometry · Mathematics 2007-05-23 Shu Kawaguchi

A family $f_t(z)$ of polynomials over a number field $K$ will be called \emph{weighted homogeneous} if and only if $f_t(z)=F(z^e, t)$ for some binary homogeneous form $F(X, Y)$ and some integer $e\geq 2$. For example, the family $z^d+t$ is…

Number Theory · Mathematics 2017-06-14 Patrick Ingram

We construct canonical heights of subvarieties for dynamical system of several morphisms associated with line bundles defined over a number field, and study some of their properties. We also construct invariant currents for such systems…

Number Theory · Mathematics 2007-05-23 Shu Kawaguchi

We compute a lower bound of the canonical height on quadratic twists of certain elliptic curves. Also we show a simple method for constructing families of quadratic twists with an explicit rational point. % from cubic polynomials. Using the…

Number Theory · Mathematics 2011-11-01 T. Nara

Given an endomorphism f of projective space, we exhibit explicit bounds on the difference between the naive height of a divisor and its canonical height relative to f.

Number Theory · Mathematics 2022-07-18 Patrick Ingram

Let A be an abelian variety defined over a number field K, and consider the canonical height function attached to a symmetric ample line bundle L on A. We prove that there is a positive lower bound C (depending on A, K, and L) for the…

Number Theory · Mathematics 2007-05-23 Matthew Baker , Joseph Silverman

In a recent breakthrough, Dimitrov solved the Schinzel-Zassenhaus Conjecture. We follow his approach and adapt it to certain dynamical systems arising from polynomials of the form $T^p+c$ where $p$ is a prime number and where the orbit of…

Number Theory · Mathematics 2021-11-04 Philipp Habegger , Harry Schmidt

The canonical dimension is an invariant attached to admissible representations of p-adic reductive groups, which has only received significant attention in the case of mod-p representations. In the case of complex representations, the…

Representation Theory · Mathematics 2025-09-30 Mick Gielen

We give an algorithm which requires no integer factorization for computing the canonical height of a point in $\mathbb{P}^1(\mathbb{Q})$ relative to a morphism $\phi: \mathbb{P}_{\mathbb{Q}}^1 \rightarrow \mathbb{P}_{\mathbb{Q}}^1$ of…

Number Theory · Mathematics 2016-02-17 Elliot Wells

In 2006, Kawaguchi proved a lower bound for height of h(f(P)) when f is a regular affine automorphism of A^2, and he conjectured that a similar estimate is also true for regular affine automorphisms of A^n for n>2. In this paper we prove…

Number Theory · Mathematics 2009-09-18 ChongGyu Lee

Let $\mathbb{F}$ be the function field of a curve over an algebraically closed field with $\operatorname{char}(\mathbb{F})\ne2,3$, and let $E/\mathbb{F}$ be an elliptic curve. Then for all finite extensions $\mathbb{K}/\mathbb{F}$ and all…

Number Theory · Mathematics 2024-04-19 Joseph H. Silverman

We study lower bounds for the self-intersection of the canonical divisor of "canonical varieties" (i.e. varieties whose canonical linear system gives a birational map). We give some improvements for the known results in the case of surfaces…

Algebraic Geometry · Mathematics 2007-05-23 Miguel A. Barja

A system of transformations is associated to a rational point on an elliptic curve. The sequence entropy is connected to the canonical height, and in some cases there is a canonically defined quotient system whose entropy is the canonical…

Number Theory · Mathematics 2007-05-23 Manfred Einsliedler , Graham Everest , Thomas Ward

We study canonical heights for plane polynomial mappings of small topological degree. In particular, we prove that for points of canonical height zero, the arithmetic degree is bounded by the topological degree and hence strictly smaller…

Number Theory · Mathematics 2012-10-25 Mattias Jonsson , Elizabeth Wulcan

An approach to the calculation of local canonical morphic heights is described, motivated by the analogy between the classical height in Diophantine geometry and entropy in algebraic dynamics. We consider cases where the local morphic…

Number Theory · Mathematics 2014-11-18 Manfred Einsiedler , Graham Everest , Thomas Ward

We prove, for the canonical height defined by Silverman [15] on monomial maps, the existence of effective lower bounds for heights of points with Zariski dense orbit, for cases with endomorphisms induced by matrices with real Jordan form.

Number Theory · Mathematics 2019-01-15 Jorge Mello

We improve the best lower bounds on the chromatic number of Euclidean space in small dimensions. The new results depend on extensive computations in Sage.

Combinatorics · Mathematics 2014-09-05 Matthew Kahle , Birra Taha

Let K be a number field and let E/K be an elliptic curve. If E has complex multiplication, we show that there is a positive lower bound for the canonical height of non-torsion points on E defined over the maximal abelian extension K^ab of…

Number Theory · Mathematics 2007-05-23 Matthew Baker
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