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This work is devoted to a systematic study of symplectic convexity for integrable Hamiltonian systems with elliptic and focus-focus singularities. A distinctive feature of these systems is that their base spaces are still smooth manifolds…

辛几何 · 数学 2018-09-18 Tudor Ratiu , Christophe Wacheux , Nguyen Tien Zung

It's well-known in \kahler geometry that the infinite dimensional symmetric space $\hcal$ of smooth \kahler metrics in a fixed \kahler class on a polarized \kahler manifold is well approximated by finite dimensional submanifolds $\bcal_k…

微分几何 · 数学 2018-07-10 Renjie Feng

We give an explicit local classification of conformally equivalent but oppositely oriented Kaehler metrics on a 4-manifold which are toric with respect to a common 2-torus action. In the generic case, these structures have an intriguing…

微分几何 · 数学 2013-03-01 Vestislav Apostolov , David M. J. Calderbank , Paul Gauduchon

Here are few notes on not necessarily normal toric varieties and resolution by toric blow-up. These notes are independent of, but in the same spirit as the earlier preprint arXiv:math.AG/0306221. That is, they focus on the fact that toric…

代数几何 · 数学 2007-05-23 Howard M Thompson

We explore the positive geometry of statistical models in the setting of toric varieties. Our focus lies on models for discrete data that are parameterized in terms of Cox coordinates. We develop a geometric theory for computations in…

代数几何 · 数学 2023-03-23 Michael Borinsky , Anna-Laura Sattelberger , Bernd Sturmfels , Simon Telen

We present an explicit formula for the canonical height of a projective toric variety.

数论 · 数学 2015-03-17 Mounir Hajli

Given a closed orientable surface (\Sigma) of genus at least two, we establish an affine isomorphism between the convex compact set of isotopy-invariant topological measures on (\Sigma) and the convex compact set of additive functions on…

一般拓扑 · 数学 2009-03-17 Frol Zapolsky

We study the multi-height distribution of rational points of smooth, projective and split toric varieties over $\mathbf{Q}$ using the lift of the number of points to universal torsors.

数论 · 数学 2026-03-16 Nicolas Bongiorno

In this paper we determine the canonical arithmetic volume of hypersurfaces in smooth projective toric varieties. As a consequence, we prove a generalized Hodge index theorem on hypersurfaces in smooth projective toric varieties.

代数几何 · 数学 2024-07-16 Mounir Hajli

We give precise estimates of some holomorphically invariant infinitesimal metrics near a pseudoconcave points in a wide family of ``model'' domains for that situation in $\mathbb C^2$. This extends to metrics (rather distances) the authors'…

复变函数 · 数学 2026-05-05 Pascal J. Thomas , Nikolai Nikolov

Toric quiver varieties (moduli spaces of quiver representations) are studied. Given a quiver and a weight there is an associated quasiprojective toric variety together with a canonical embedding into projective space. It is shown that for a…

表示论 · 数学 2014-02-21 M. Domokos , Dániel Joó

We study aspects related to Kontsevich's homological mirror symmetry conjecture in the case of Calabi-Yau complete intersections in toric varieties. In a 1996 lecture at Rutgers University, Kontsevich indicated how his proposal implies that…

代数几何 · 数学 2007-05-23 Richard Paul Horja

We give an optimal upper bound of the degree of quasi-smooth hypersurfaces which are invariant by a one-dimensional holomorphic foliation on a compact toric orbifold, i.e. on a complete simplicial toric variety. This bound depends only on…

复变函数 · 数学 2021-09-07 Miguel Rodríguez Peña

In the first part of the paper, we build a foundation for further work on Hamiltonian actions on symplectic orbifolds. Most importantly we prove the orbifold versions of the abelian connectedness and convexity theorems. In the second half,…

dg-ga · 数学 2008-02-03 Eugene Lerman , Susan Tolman

In this paper, we proved a rigidity theorem of the Hodge metric for concave horizontal slices and a local rigidity theorem for the monodromy representation.

微分几何 · 数学 2007-05-23 Zhiqin Lu

We formulate a conjecture characterizing smooth projective varieties in positive characteristic whose Frobenius morphism can be lifted modulo $p^2$ - we expect that such varieties, after a finite \'etale cover, admit a toric fibration over…

代数几何 · 数学 2021-02-08 Piotr Achinger , Jakub Witaszek , Maciej Zdanowicz

In these notes, uniform convergence on compacta is studied on the space of functions taking values in the set of finite Borel measures. Related limit theorems, including L\'evy's continuity theorem and functional limit theorems for…

概率论 · 数学 2026-01-13 Takahiro Hasebe , Ikkei Hotta , Takuya Murayama

Chow stability is one notion of Mumford's Geometric Invariant Theory for studying the moduli space of polarized varieties. Kapranov, Sturmfels and Zelevinsky detected that Chow stability of polarized toric varieties is determined by its…

代数几何 · 数学 2016-02-29 Naoto Yotsutani

A result of Bangert states that the stable norm associated to any Riemannian metric on the $2$-torus $T^2$ is strictly convex. We demonstrate that the space of stable norms associated to metrics on $T^2$ forms a proper dense subset of the…

微分几何 · 数学 2010-10-08 Eran Makover , Hugo Parlier , Craig J. Sutton

We provide an explicit resolution of the Abreu equation on convex labeled quadrilaterals. This confirms a conjecture of Donaldson in this particular case and implies a complete classification of the explicit toric K\"ahler-Einstein and…

微分几何 · 数学 2011-12-15 Eveline Legendre