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Some monotone increasing sequences of the lower bounds for the minimum eigenvalue of $M$-matrices are given. It is proved that these sequences are convergent and improve some existing results. Numerical examples show that these sequences…

Numerical Analysis · Mathematics 2017-04-19 Jianxing Zhao , Caili Sang

We prove that every minimal brick on n vertices has at least n/9 vertices of degree at most 4.

Combinatorics · Mathematics 2012-10-17 Henning Bruhn , Maya Stein

In this paper we prove some new symmetry results for the extremals of the Caffarelli-Kohn-Nirenberg inequalities, in any dimension larger or equal than two.

Analysis of PDEs · Mathematics 2012-12-27 Jean Dolbeault , Maria J. Esteban , Michael Loss , Gabriella Tarantello

We formulate a comparison of minimal log discrepancies of a variety and its ambient space with appropriate boundaries in terms of motivic integration. It was obtained also by Ein and Musta\c{t}\v{a} independently.

Algebraic Geometry · Mathematics 2007-05-23 Masayuki Kawakita

We prove a general fusion theorem for complete orientable minimal surfaces in $\mathbb{R}^3$ with finite total curvature. As a consequence, complete orientable minimal surfaces of weak finite total curvature with exotic geometry are…

Differential Geometry · Mathematics 2010-04-16 Francisco J. Lopez

The idea of minimum distance, familiar from R <-> 1/R duality when the string target space is a circle, is analyzed for less trivial geometries. The particular geometry studied is that of a blown-up quotient singularity within a Calabi-Yau…

High Energy Physics - Theory · Physics 2009-10-28 P. Aspinwall

We prove some uniqueness results for conics of minimal area that enclose a compact, full-dimensional subset of the elliptic plane. The minimal enclosing conic is unique if its center or axes are prescribed. Moreover, we provide sufficient…

Metric Geometry · Mathematics 2010-08-26 Matthias J. Weber , Hans-Peter Schröcker

Let $X$ be an algebraic variety with Gorenstein singularities. We define the notion of a wonderful resolution of singularities of $X$ by analogy with the theory of wonderful compactifications of semi-simple linear algebraic groups. We prove…

Algebraic Geometry · Mathematics 2013-09-04 Roland Abuaf

We prove the existence of a minimal diffeomorphism isotopic to the identity between two hyperbolic cone surfaces $(\Sigma,g_1)$ and $(\Sigma,g_2)$ when the cone angles of $g_1$ and $g_2$ are different and smaller than $\pi$. When the cone…

Geometric Topology · Mathematics 2015-03-19 Jérémy Toulisse

The structure of nilpotent symplectic algebras of maximal class has been studied in [8, 5]. In this paper, we study the dual subclass of algebras of minimal class. In particular, we show that symplectic alternating algebras of dimension up…

Rings and Algebras · Mathematics 2024-07-04 Layla Sorkatti , Özlem Uğurlu , Manisha Varahagiri

We prove that the existence of log minimal models in dimension $d$ essentially implies the LMMP with scaling in dimension $d$. As a consequence we prove that a weak nonvanishing conjecture in dimension $d$ implies the minimal model…

Algebraic Geometry · Mathematics 2009-07-27 Caucher Birkar

In this paper we prove a new asymptotic lower bound for the minimal number of simplices in simplicial dissections of $n$-dimensional cubes. In particular we show that the number of simplices in dissections of $n$-cubes without additional…

Metric Geometry · Mathematics 2012-12-27 Alexey Glazyrin

We consider the quotient variety associated to a linear representation of the cyclic group of order p in characteristic p>0. We estimate the minimal discrepancy of exceptional divisors over the singular locus. In particular, we give…

Algebraic Geometry · Mathematics 2024-02-27 Takehiko Yasuda

This is the first of a series of papers studying real algebraic threefolds using the minimal model program. The main results are outlined in Part II. The present part I. contains the necessary preliminary work concerning terminal…

alg-geom · Mathematics 2007-05-23 János Kollár

We discuss upper and lower bounds for the size of gaps in the length spectrum of negatively curved manifolds. For manifolds with algebraic generators for the fundamental group, we establish the existence of exponential lower bounds for the…

Dynamical Systems · Mathematics 2016-02-16 Dmitry Dolgopyat , Dmitry Jakobson

In this paper, we systematically develop the $m$-contiguity distance between simplicial maps as a discrete approximation framework for homotopical complexity in the category of simplicial complexes. We construct an increasing sequence of…

Algebraic Topology · Mathematics 2026-04-16 Nilay Ekiz Yazici , Nursultan Kuanyshov , Ayse Borat

It is known that the underlying spaces of all abelian quotient singularities which are embeddable as complete intersections of hypersurfaces in an affine space can be overall resolved by means of projective torus-equivariant crepant…

Algebraic Geometry · Mathematics 2007-05-23 Dimitrios I. Dais , Christian Haase , G"unter M. Ziegler

We describe two different approaches to making systematic classifications of plane lattice polygons, and recover the toric codes they generate, over small fields, where these match or exceed the best known minimum distance. This includes a…

Combinatorics · Mathematics 2013-02-01 Gavin Brown , Alexander M. Kasprzyk

We give upper bounds for the number of irreducible representations of dimension at most n for a compact semisimple Lie group. In particular, we prove that there are at most n irreducible representations of dimension at most n for a simple…

Representation Theory · Mathematics 2010-03-17 Robert Guralnick , Michael Larsen , Corey Manack

The study of singular perturbations of the Dirichlet energy is at the core of the phenomenological-description paradigm in soft condensed matter. Being able to pass to the limit plays a crucial role in the understanding of the…

Analysis of PDEs · Mathematics 2017-09-19 Andres Contreras , Xavier Lamy , Rémy Rodiac