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We study the Teichm\"uller metric on the Teichm\"uller space of a surface of finite type, in regions where the injectivity radius of the surface is small. The main result is that in such regions the Teichm\"uller metric is approximated up…

Geometric Topology · Mathematics 2016-09-06 Yair Minsky

We study weighted simultaneous rational approximation to points of the form $(1,\xi,\xi^2)$, for a class of extremal real numbers $\xi$, within the framework of multi-parametric geometry of numbers.

Number Theory · Mathematics 2026-02-03 Damien Roy

We obtain rates of convergence of numerical approximations of abstract linear parabolic evolution equations in Banach spaces. Our estimates extend known results from the literature of finite element approximations of parabolic equations to…

Numerical Analysis · Mathematics 2024-11-20 Øyvind Stormark Auestad

In this paper, we study tropicalisations of singular surfaces in toric threefolds. We completely classify singular tropical surfaces of maximal-dimensional type, show that they can generically have only finitely many singular points, and…

Algebraic Geometry · Mathematics 2013-09-04 Hannah Markwig , Thomas Markwig , Eugenii Shustin

The aim of the paper is to show algorithms for geometrical manipulations on NURBS surfaces. These include generating NURBS surfaces that pass through given points, calculating the minimum distance to a point and include line to surface and…

Numerical Analysis · Mathematics 2022-10-25 Gernot Beer

We study the curvature of a smooth algebraic surface $X\subset \mathbb R^3$ of degree $d$ from the point of view of algebraic geometry. More precisely, we consider umbilical points and points of critical curvature. We prove that the number…

Algebraic Geometry · Mathematics 2024-07-19 Paul Breiding , Kristian Ranestad , Madeleine Weinstein

In this paper, we are concerned with light-like extremal surfaces in curved spacetimes. It is interesting to find that under a diffeomorphic transformation of variables, the light-like extremal surfaces can be described by a system of…

Differential Geometry · Mathematics 2015-06-15 Shou-Jun Huang , Chun-Lei He

Enumerative algebraic geometry deals with problems of counting geometric objects defined algebraically, An important class of enumerative problems is that of counting curves: given a class of curves in some projective variety defined by…

Algebraic Geometry · Mathematics 2019-03-05 Yaniv Ganor

Three numerical coverage metrics for the symbolic simulation of dense-time systems and their estimation methods are presented. Special techniques to derive numerical estimations of dense-time state-spaces have also been developed.…

Software Engineering · Computer Science 2007-05-23 Farn Wang , Geng-Dian Hwang , Fang Yu

We survey some results on toric topology.

Algebraic Topology · Mathematics 2017-01-10 Mikiya Masuda

By the nature of their construction, many statistical models for extremes result in likelihood functions that are computationally prohibitive to evaluate. This is consequently problematic for the purposes of likelihood-based inference. With…

Methodology · Statistics 2014-11-07 Robert Erhardt , Scott A. Sisson

We prove that in many cases the existence of an extremal metric for some Laplace eigenvalue in a conformal class allows to find extremal metrics in conformal classes close by. As a consequence and as part of the arguments we obtain…

Differential Geometry · Mathematics 2016-12-16 Henrik Matthiesen

We present a low entry-level introduction to the Conformal Bootstrap. We review and obtain several basic bounds using Linear Programming in machine precision in Mathematica, making the results accessible even to the most uneducated computer…

High Energy Physics - Theory · Physics 2017-09-07 António Antunes

In the article it was shown the convergence of special integral of two dimensional Terry's problem. Main tools of the article are an investigation of real algebraic varieties and estimations of areas of algebraic surfaces.

Classical Analysis and ODEs · Mathematics 2017-01-31 Ilgar Jabbarov

We generalize the bifurcation technique of Bando-Mabuchi in the context of extremal metrics.

Differential Geometry · Mathematics 2015-06-16 Xiuxiong Chen , Mihai Paun , Yu Zeng

A general method to derive the master equations for extremal models is established. These systems are shown to develop a peculiar kind of correlations between elements related to the characterization of extremal dynamics as an information…

Statistical Mechanics · Physics 2007-05-23 Daniele Balboni

It is known that the Littlewood-Richardson coefficients can be calculated using a certain class of measures, and these measures have a rigidity property when the coefficient is equal to 1. Rigid measures decompose uniquely into sums of…

Combinatorics · Mathematics 2010-03-02 H. Bercovici , C. Angiuli

We survey recent developments and open problems about extremal effective divisors and higher codimension cycles in moduli spaces of curves.

Algebraic Geometry · Mathematics 2017-11-03 Dawei Chen

Let $X=\mathbb{D}/\Gamma$ be an arbitrary Riemann surface. We establish a necessary and sufficient criterion for $[f]\in T(X)$ to have a Teichm\"uller-type extremal map.

Complex Variables · Mathematics 2025-11-17 Dragomir Šarić

We examine a variety of numerical methods that arise when considering dynamical systems in the context of physics-based simulations of deformable objects. Such problems arise in various applications, including animation, robotics, control…

Graphics · Computer Science 2021-08-19 Uri M. Ascher , Egor Larionov , Seung Heon Sheen , Dinesh K. Pai