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Related papers: On the strong convolution singularity property

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In this note, we combine the work of Ilmanen and of Colding-Ilmanen-Minicozzi to observe a uniqueness property for tangent flows at the first singular time of a smooth mean curvature flow of a closed surface in 3-dimensional Euclidean…

Differential Geometry · Mathematics 2014-02-27 Jacob Bernstein , Lu Wang

One of the classical approaches to solving color reproduction problems, such as color adaptation or color space transform, is the use of low-parameter spectral models. The strength of this approach is the ability to choose a set of…

Computer Vision and Pattern Recognition · Computer Science 2022-03-09 Alexey Kroshnin , Viacheslav Vasilev , Egor Ershov , Denis Shepelev , Dmitry Nikolaev , Mikhail Tchobanou

We present the optimal hydrodynamic model for rarefied gas flows relative to a given kinetic model by combining the recent theory of slow spectral closure with machine learning techniques. We learn generalized transport coefficients from…

Fluid Dynamics · Physics 2025-09-09 Florian Kogelbauer , Candi Zheng , Ilya Karlin

Strong matrix properties, roughly speaking, refer to generic conditions on a matrix such that its spectral perturbation and pattern perturbation interact nicely to cover a neighborhood in the ambient space. With a rich history, these strong…

Combinatorics · Mathematics 2026-02-24 Minerva Catral , Shaun Fallat , Himanshu Gupta , Jephian C. -H. Lin

Let $K$ be a field of characteristic zero, $X$ and $Y$ be smooth $K$-varieties, and let $V$ be a finite dimensional $K$-vector space. For two algebraic morphisms $\varphi:X\rightarrow V$ and $\psi:Y\rightarrow V$ we define a convolution…

Algebraic Geometry · Mathematics 2020-08-05 Itay Glazer , Yotam I. Hendel

For a continuous flow on a compact metric space, the aim of this paper is to prove a Conley-type decomposition of the strong chain recurrent set. We first discuss in details the main properties of strong chain recurrent sets. We then…

Dynamical Systems · Mathematics 2019-03-27 Olga Bernardi , Anna Florio

A mean curvature flow starting from a closed embedded hypersurface in $R^{n+1}$ must develop singularities. We show that if the flow has only generic singularities, then the space-time singular set is contained in finitely many compact…

Differential Geometry · Mathematics 2015-02-25 Tobias Holck Colding , William P. Minicozzi

Over the last 10 years or so, advanced statistical properties, including exponential decay of correlations, have been established for certain classes of singular hyperbolic flows in three dimensions. The results apply in particular to the…

Dynamical Systems · Mathematics 2019-04-25 Vitor Araujo , Ian Melbourne

We discuss several topics related to the notion of strong hyperbolicity which are of interest in general relativity. After introducing the concept and showing its relevance we provide some covariant definitions of strong hyperbolicity. We…

General Relativity and Quantum Cosmology · Physics 2017-08-07 Oscar Reula

This paper studies singularity structures of the linear inviscid damping of two-dimensional Euler equations in a finite periodic channel. We introduce a recursive definition of singularity structures which characterize the singularities of…

Analysis of PDEs · Mathematics 2024-05-09 Wenjie Lu

This paper is devoted to the study of the weak-strong uniqueness property for the full compressible magnetohydrodynamics flows. The governing equations for magnetohydrodynamic flows are expressed by the full Navier-Stokes system for…

Analysis of PDEs · Mathematics 2013-01-16 Weiping Yan

Sufficient conditions for comparing the convolutions of heterogeneous gamma random variables in terms of the usual stochastic order are established. Such comparisons are characterized by the Schur convexity properties of the cumulative…

Probability · Mathematics 2016-01-20 Farbod Roosta-Khorasani , Gabor J. Szekely

From the sandpoint of neural network dynamics we consider dynamical system of special type pesesses gradient (symmetric) and Hamiltonian (antisymmetric) flows. The conditions when Hamiltonian flow properties are dominant in the system are…

Disordered Systems and Neural Networks · Physics 2007-05-23 A. K. Prykarpatsky , V. V. Gafiychuk

The level set flow of a mean-convex closed hypersurface is stable off singularities, in the sense that the level set flow of the perturbed hypersurface would be close in the smooth topology to the original flow wherever the latter is…

Differential Geometry · Mathematics 2024-12-13 Siao-Hao Guo

In order to utilize the full potential of tailored flows of electromagnetic energy at the nanoscale, we need to understand its general behaviour given by its generic representation of interfering random waves. For applications in on-chip…

Optics · Physics 2020-04-28 M. A. van Gogh , T. Bauer , L. De Angelis , L. Kuipers

The starting assumptions to study the convergence and complexity of gradient-type methods may be the smoothness (also called Lipschitz continuity of gradient) and the strong convexity. In this note, we revisit these two basic properties…

Optimization and Control · Mathematics 2021-11-01 Lu Zhang , Jiani Wang , Hui Zhang

A simple and efficient algorithm to numerically compute the genus of surfaces of three-dimensional objects using the Euler characteristic formula is presented. The algorithm applies to objects obtained by thresholding a scalar field in a…

Fluid Dynamics · Physics 2017-09-05 Adrián Lozano-Durán , Guillem Borrell

We consider strictly convex hypersurfaces with the boundary which meets a strictly convex cone perpendicularly. We prove that if these hypersurfaces expand inside this cone, driven by the power of the Gauss curvature, then the evolution…

Differential Geometry · Mathematics 2020-08-10 Li Chen , Ni Xiang

We show that any almost periodic outer flow $\alpha : \mathbb R \curvearrowright R$ on the hyperfinite type $\mathrm{II}_1$ factor with Connes' spectrum $\Gamma(\alpha) = \mathbb R$ satisfies the Rokhlin property and thus is unique up to…

Operator Algebras · Mathematics 2026-05-13 Cyril Houdayer , Amine Marrakchi

We consider theories which explain the flatness of the power spectrum of scalar perturbations in the Universe by conformal invariance, such as conformal rolling model and Galilean Genesis. We show that to the leading {\it non-linear} order,…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-29 M. Libanov , S. Mironov , V. Rubakov