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Varieties with log terminal and log canonical singularities are considered in the Minimal Model Program, see \cite{...} for introduction. In \cite{shokurov:hyp} it was conjectured that many of the interesting sets, associated with these…

alg-geom · Mathematics 2015-06-30 Valery Alexeev

We establish the uniqueness of a saddle-shaped solution to the diffusion equation $-\Delta u = f(u)$ in all of $\mathbb{R}^{2m}$, where $f$ is of bistable type, in every even dimension $2m \geq 2$. In addition, we prove its stability…

Analysis of PDEs · Mathematics 2011-02-16 Xavier Cabre

We construct two new one-parameter families of monotonicity formulas to study the free boundary points in the lower dimensional obstacle problem. The first one is a family of Weiss type formulas geared for points of any given homogeneity…

Analysis of PDEs · Mathematics 2013-06-25 Nicola Garofalo , Arshak Petrosyan

We determine the arrangement of spins in the ground state of the XY model with quenched, random fields, on a fully connected graph. Two types of disordered fields are considered, namely randomly oriented magnetic fields, and randomly…

Statistical Mechanics · Physics 2024-04-01 Rajiv G Pereira , Ananya Janardhanan , Mustansir Barma

Inspired by the issue of stability of molecular structures, we investigate the strict minimality of point sets with respect to configurational energies featuring two- and three-body contributions. Our main focus is on characterizing those…

Combinatorics · Mathematics 2021-12-08 Laurent Bétermin , Manuel Friedrich , Ulisse Stefanelli

We introduce a relaxation of stability, called almost sure stability, which is insensitive to perturbations by subsets of Loeb measure $0$ in a non-standard finite group. We show that almost sure stability satisfies a stationarity principle…

Logic · Mathematics 2026-01-14 Amador Martin-Pizarro , Daniel Palacin , Julia Wolf

We consider the M-theory lifts of configurations of type IIA D6-branes intersecting at angles. In supersymmetry preserving cases, the lifts correspond to special holonomy geometries, like conifolds and $G_2$ holonomy singularities.…

High Energy Physics - Theory · Physics 2007-05-23 Angel M. Uranga

In this article, we thoroughly investigate the stability inequality for Ricci-flat cones. Perhaps most importantly, we prove that the Ricci-flat cone over CP^2 is stable, showing that the first stable non-flat Ricci-flat cone occurs in the…

Differential Geometry · Mathematics 2011-11-22 Stuart Hall , Robert Haslhofer , Michael Siepmann

We prove a slope 1 stability range for the homology of the symplectic, orthogonal and unitary groups with respect to the hyperbolic form, over any fields other than $F_2$, improving the known range by a factor 2 in the case of finite…

Algebraic Topology · Mathematics 2020-05-06 David Sprehn , Nathalie Wahl

We examine the minimal magnitude of perturbations necessary to change the number $N$ of static equilibrium points of a convex solid $K$. We call the normalized volume of the minimally necessary truncation robustness and we seek shapes with…

Metric Geometry · Mathematics 2019-02-20 G. Domokos , Z. Lángi

In this note, we show that the solution to the Dirichlet problem for the minimal surface system in any codimension is unique in the space of distance-decreasing maps. This follows as a corollary of the following stability theorem: if a…

Differential Geometry · Mathematics 2007-05-23 Yng-Ing Lee , Mu-Tao Wang

We study the stability of coassociative 4-folds with conical singularities under perturbations of the ambient G_2 structure by defining an integer invariant of a coassociative cone which we call the stability index. The stability index of a…

Differential Geometry · Mathematics 2012-10-16 Jason D. Lotay

We construct 7-dimensional compact Einstein spaces with conical singularities that preserve 1/8 of the supersymmetries of M-theory. Mathematically they have weak G_2-holonomy. We show that for every non-compact G_2-holonomy manifold which…

High Energy Physics - Theory · Physics 2010-04-05 Adel Bilal , Steffen Metzger

We prove that if an N-vortex pair nearly minimizes the Yang-Mills-Higgs energy, then it is second order close to a minimizer. First we use new weighted inequalities in two dimensions and compactness arguments to show stability for sections…

Analysis of PDEs · Mathematics 2024-09-23 Aria Halavati

We study the strict stability of calibrated cones with an isolated singularity. For special Lagrangian cones and coassociative cones, we prove the strict stability. In the complex case, we give non-strictly stable examples.

Differential Geometry · Mathematics 2025-03-25 Bryan Dimler , Jooho Lee

A standard way of approximating or discretizing a metric space is by taking its Rips complexes. These approximations for all parameters are often bound together into a filtration, to which we apply the fundamental group or the first…

Geometric Topology · Mathematics 2020-03-10 Žiga Virk

It is, by now, classical that lattices in higher rank semisimple groups have various rigidity properties. In this work, we add another such rigidity property to the list: uniform stability with respect to the family of unitary operators on…

Group Theory · Mathematics 2023-07-11 Lev Glebsky , Alexander Lubotzky , Nicolas Monod , Bharatram Rangarajan

We investigate the properties of Lindblad equations on $d$-dimensional lattices supporting a unique steady-state configuration. We consider the case of a time evolution weakly symmetric under the action of a finite group $G$, which is also…

Quantum Physics · Physics 2020-02-26 Davide Nigro

This article contains a self-contained proof of the stability under convolution of the space of resurgent functions associated with a closed discrete subset of the complex plane (the set of possible singularities), under the assumption that…

Dynamical Systems · Mathematics 2014-06-27 David Sauzin

Two dimensional realizations of self-consistent models for the ``perfect elliptic disks'' were tested for global stability by gravitational N-body integration. The family of perfect elliptic disk potentials have two isolating integrals;…

Astrophysics · Physics 2009-10-30 Stephen Levine , Linda Sparke