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We present the discrete version of heat kernel smoothing on graph data structure. The method is used to smooth data in an irregularly shaped domains in 3D images. New statistical properties are derived. As an application, we show how to…

统计方法学 · 统计学 2017-10-24 Moo K. Chung , Yanli Wang , Gurong Wu

Many contemporary statistical learning methods assume a Euclidean feature space. This paper presents a method for defining similarity based on hyperspherical geometry and shows that it often improves the performance of support vector…

机器学习 · 统计学 2018-08-07 Chenchao Zhao , Jun S. Song

Large time behaviour of heat semigroups (and more generally, of positive selfadjoint semigroups) is studied. Convergence of the semigroup to the ground state and of averaged logarithms of kernels to the ground state energy is shown in the…

泛函分析 · 数学 2012-12-19 Matthias Keller , Daniel Lenz , Hendrik Vogt , Radosław Wojciechowski

We review recent results and ongoing investigations of the symplectic and Poisson geometry of derived moduli spaces, and describe applications to deformation quantization of such spaces.

代数几何 · 数学 2016-03-10 T. Pantev , G. Vezzosi

In this work, we propose an unsupervised method for learning dense correspondences between shapes using a recent deep functional map framework. Instead of depending on ground-truth correspondences or the computationally expensive geodesic…

计算机视觉与模式识别 · 计算机科学 2020-10-27 Mehmet Aygün , Zorah Lähner , Daniel Cremers

We derive a novel integral representations of Jacobi polynomials in terms of the Gauss hypergeometric function. Such representation is then used to give the explicit integral representation for the Heat kernel on the quantized Riemann…

数学物理 · 物理学 2020-02-21 Ali Hafoud , Allal Ghanmi

In the presented paper we tackle the problem of the effective field theory in curved spacetime (cEFT) construction. To this end, we propose to use the heat kernel method. After introducing the general formalism based on the well established…

高能物理 - 理论 · 物理学 2019-01-11 Łukasz Nakonieczny

Bounds on the logarithmic derivatives of the heat kernel on a compact Riemannian manifolds have been long known, and were recently extended, for the log-gradient and log-Hessian, to general complete Riemannian manifolds. Here, we further…

概率论 · 数学 2022-12-20 Robert W. Neel , Ludovic Sacchelli

We use some results from the theory of Reproducing Kernel Hilbert Spaces to show that the reachable space of the heat equation for a finite rod with either one or two Dirichlet boundary controls is a RKHS of analytic functions on a square,…

最优化与控制 · 数学 2019-10-10 Marcos Lopez-Garcia

We introduce renormalized integrals which generalize conventional measure theoretic integrals. One approximates the integration domain by measure spaces and defines the integral as the limit of integrals over the approximating spaces. This…

微分几何 · 数学 2012-06-12 Christian Baer

We construct the fundamental solution (the heat kernel) $p^{\kappa}$ to the equation $\partial_t=\mathcal{L}^{\kappa}$, where under certain assumptions the operator $\mathcal{L}^{\kappa}$ takes one of the following forms, \begin{align*}…

偏微分方程分析 · 数学 2018-04-05 Tomasz Grzywny , Karol Szczypkowski

We review recent results about heat kernel estimates based on Kato conditions on the negative part of the Ricci curvature.

微分几何 · 数学 2018-04-12 Christian Rose , Peter Stollmann

We state a sufficient condition for a fusion system to be saturated. This is then used to investigate localities with kernels, i.e. localities which are (in a particular way) extensions of groups by localities. As an application of these…

群论 · 数学 2022-08-17 Valentina Grazian , Ellen Henke

The high temperature asymptotics of the Helmholtz free energy of electromagnetic field subjected to boundary conditions with spherical and cylindrical symmetries are constructed by making use of a general expansion in terms of heat kernel…

高能物理 - 理论 · 物理学 2009-11-07 M. Bordag , V. V. Nesterenko , I. G. Pirozhenko

The heat kernel $M_{xy} = <x\mid exp [ 1/\sqrt{g} \partial_\mu g^{\mu\nu} \sqrt{g} \partial_\nu ]t \mid y>$ is of central importance when studying the propagation of a scalar particle in curved space. It is quite convenient to analyze this…

高能物理 - 理论 · 物理学 2016-09-06 L. Martin , D. G. C. McKeon

A diagramatic heat kernel expansion technique is presented. The method is especially well suited to the small-derivative expansion of the heat kernel, but it can also be used to reproduce the results obtained by the approach known as…

广义相对论与量子宇宙学 · 物理学 2009-11-07 Ian G Moss , Wade Naylor

In this paper we investigate and compare different gradient algorithms designed for the domain expression of the shape derivative. Our main focus is to examine the usefulness of kernel reproducing Hilbert spaces for PDE constrained shape…

最优化与控制 · 数学 2016-04-20 Martin Eigel , Kevin Sturm

Being motivated by physical applications (as the phi^4 model) we calculate the heat kernel coefficients for generalised Laplacians on the Moyal plane containing both left and right multiplications. We found both star-local and star-nonlocal…

高能物理 - 理论 · 物理学 2009-11-11 Dmitri V. Vassilevich

This paper aims at proving the local boundedness and continuity of solutions of the heat equation in the context of Dirichlet spaces under some rather weak additional assumptions. We consider symmetric local regular Dirichlet forms which…

偏微分方程分析 · 数学 2020-11-16 Qi Hou , Laurent Saloff-Coste

Using heat kernel methods developed by Vaillant, a local index formula is obtained for families of d-bar operators on the Teichmuller universal curve of Riemann surfaces of genus g with n punctures. The formula also holds on the moduli…

微分几何 · 数学 2015-05-13 Pierre Albin , Frederic Rochon