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We prove that small deformations of canonical singularities are canonical.

alg-geom · 数学 2007-05-23 Yujiro Kawamata

We construct canonical positive currents and heights on the boundary of the ample cone of a K3 surface. These are equivariant for the automorphism group and fit together into a continuous family, defined over an enlarged boundary of the…

动力系统 · 数学 2023-08-10 Simion Filip , Valentino Tosatti

We obtain new results on the geometry of Hilbert modular varieties in positive characteristic and morphisms between them. Using these results and methods of rigid geometry, we develop a theory of canonical subgroups for abelian varieties…

数论 · 数学 2009-05-15 Eyal Z. Goren , Payman L Kassaei

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…

数论 · 数学 2007-05-23 Manfred Einsliedler , Graham Everest , Thomas Ward

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)|,…

数论 · 数学 2011-05-30 Shu Kawaguchi , Joseph H. Silverman

We bound the length of the periodic part of the orbit of a preperiodic rational subvariety via good reduction information. This bound depends only on the degree of the map, the degree of the subvariety, the dimension of the projective…

动力系统 · 数学 2016-03-03 Benjamin Hutz

We introduce a new canonical height function for Jordan blocks of small eigenvalues for endomorphisms on smooth projective varieties over a number field. We prove that under an assumption on the eigenvalues of the endomorphism on the group…

代数几何 · 数学 2017-12-21 Kaoru Sano

We define a new canonical height pairing on the rational points of elliptic curves over global function fields which takes values in the multiplicative group of a completion of the function field. This height serves as an analogue of both…

数论 · 数学 2007-05-23 Matthew A. Papanikolas

The canonical height associated to a polarized endomporhism of a projective variety, constructed by Call and Silverman and generalizing the N\'eron-Tate height on a polarized Abelian variety, plays an important role in the arithmetic theory…

数论 · 数学 2014-11-26 Patrick Ingram

We prove that, for certain extensions of valued fields which admit a sensible theory of ramification groups, there exist canonical towers that correspond to the break-points of their Herbrand function. In particular, each of the…

代数几何 · 数学 2019-11-05 Velibor Bojković

We prove that the canonical ring of a canonical variety in the sense of de Fernex and Hacon is finitely generated. We prove that canonical varieties are klt if and only if R(-K_X) is finitely generated. We introduce a notion of nefness for…

代数几何 · 数学 2015-05-06 Stefano Urbinati

Results on matrix canonical forms are used to give a complete description of the higher rank numerical range of matrices arising from the study of quantum error correction. It is shown that the set can be obtained as the intersection of…

泛函分析 · 数学 2011-02-10 Chi-Kwong Li , Nung-Sing Sze

We show that the canonical height function defined by Silverman does not have the Northcott finiteness property in general. We develop a new canonical height function for monomial maps. In certain cases, this new canonical height function…

数论 · 数学 2012-05-10 Jan-Li Lin , Chi-Hao Wang

We show that minimal models of log canonical pairs exist, assuming the existence of minimal models of smooth varieties.

代数几何 · 数学 2022-05-24 Vladimir Lazić , Nikolaos Tsakanikas

We discuss canonical local heights on abelian varieties over non-archimedean fields from the point of view of Berkovich analytic spaces. Our main result is a refinement of N\'eron's classical result relating canonical local heights with…

数论 · 数学 2024-05-29 Robin de Jong , Farbod Shokrieh

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.

数论 · 数学 2019-01-15 Jorge Mello

We classify the possible ramification data and etale local structure of orders over surfaces with canonical singularities.

环与代数 · 数学 2014-02-26 Daniel Chan , Paul Hacking , Colin Ingalls

We consider pairs (X,A), where X is a variety with klt singularities and A is a formal product of ideals on X with exponents in a fixed set that satisfies the Descending Chain Condition. We also assume that X has (formally) bounded…

代数几何 · 数学 2010-06-25 Tommaso de Fernex , Lawrence Ein , Mircea Mustata

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…

数论 · 数学 2025-03-19 Richard Griffon , Samuel Le Fourn , Fabien Pazuki

We discuss a new method to compute the canonical height of an algebraic point on a hyperelliptic jacobian over a number field. The method does not require any geometrical models, neither $p$-adic nor complex analytic ones. In the case of…

数论 · 数学 2019-02-20 Robin de Jong , J. Steffen Müller