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Let $(M,\omega)$ be a closed $2n$-dimensional semifree Hamiltonian $S^1$-manifold with only isolated fixed points. We prove that a density function of the Duistermaat-Heckman measure is log-concave. Moreover, we prove that $(M,\omega)$ and…

辛几何 · 数学 2016-01-05 Yunhyung Cho

A hermitian matrix can be parametrized by a set consisting of its determinant and the eigenvalues of its submatrices. We established a group of equations which connect these variables with the mixing parameters of diagonalization. These…

高能物理 - 唯象学 · 物理学 2024-10-03 S. H. Chiu , T. K. Kuo

We introduce LOT Wassmap, a computationally feasible algorithm to uncover low-dimensional structures in the Wasserstein space. The algorithm is motivated by the observation that many datasets are naturally interpreted as probability…

机器学习 · 计算机科学 2023-02-16 Alexander Cloninger , Keaton Hamm , Varun Khurana , Caroline Moosmüller

We develop a notion of projections between sets of probability measures using the geometric properties of the 2-Wasserstein space. It is designed for general multivariate probability measures, is computationally efficient to implement, and…

机器学习 · 统计学 2022-08-04 Florian Gunsilius , Meng Hsuan Hsieh , Myung Jin Lee

There are numerous examples in different research fields where the use of the geometric mean is more appropriate than the arithmetic mean. However, the geometric mean has a serious limitation in comparison with the arithmetic mean. Means…

应用统计 · 统计学 2019-04-05 Roberto de la Cruz , Jan-Ulrich Kreft

We study the structure of the support of a doubling measure by analyzing its self-similarity properties, which we estimate using a variant of the $L^1$ Wasserstein distance. We show that measure satisfying certain self-similarity conditions…

度量几何 · 数学 2014-11-11 Jonas Azzam , Guy David , Tatiana Toro

In this article, we consider Bergman kernels related to modules at boundary points for singular hermitian metrics on holomorphic vector bundles, and obtain a log-subharmonicity property of the Bergman kernels. As applications, we obtain a…

复变函数 · 数学 2023-05-11 Shijie Bao , Qi'an Guan

We study the Wasserstein metric to measure distances between molecules represented by the atom index dependent adjacency "Coulomb" matrix, used in kernel ridge regression based supervised learning. Resulting quantum machine learning models…

化学物理 · 物理学 2025-04-01 Onur Çaylak , O. Anatole von Lilienfeld , Björn Baumeier

It is shown that any Hermitian operator can be expanded in terms of a set of operators formed from biorthogonal basis, and the expansion coefficients are given as products of weight functions and weak values, shedding a new light on the…

量子物理 · 物理学 2013-06-21 Taksu Cheon , Sergey Poghosyan

Wasserstein-GANs have been introduced to address the deficiencies of generative adversarial networks (GANs) regarding the problems of vanishing gradients and mode collapse during the training, leading to improved convergence behaviour and…

机器学习 · 计算机科学 2019-12-17 Jan Müller , Reinhard Klein , Michael Weinmann

We define and study metrics and weak metrics on the Teichmueller space of a surface of topologically finite type with boundary. These metrics and weak metrics are associated to the hyperbolic length spectrum of simple closed curves and of…

几何拓扑 · 数学 2009-03-05 Lixin Liu , Athanase Papadopoulos , Weixu Su , Guillaume Théret

We develop a new kind of nonnegativity certificate for univariate polynomials on an interval. In many applications, nonnegative Bernstein coefficients are often used as a simple way of certifying polynomial nonnegativity. Our proposed…

最优化与控制 · 数学 2023-09-20 Mitchell Tong Harris , Pablo A. Parrilo

We explore the concentration properties of the ratio between the geometric mean and the arithmetic mean, showing that for certain sequences of weights one does obtain concentration, around a value that depends on the sequence.

度量几何 · 数学 2010-10-20 J. M. Aldaz

In this paper we introduce the limit, unique solution of the nonlinear equations, geodesic property, tolerance relations and pinch on the spectral geometric mean for two positive definite operators. We show that the spectral geometric mean…

泛函分析 · 数学 2022-08-29 Luyining Gan , Sejong Kim

In this paper we present a linear regression model for modal symbolic data. The observed variables are histogram variables according to the definition given in the framework of Symbolic Data Analysis and the parameters of the model are…

统计方法学 · 统计学 2016-05-03 Antonio Irpino , Rosanna Verde

Statistical inference based on optimal transport offers a different perspective from that of maximum likelihood, and has increasingly gained attention in recent years. In this paper, we study univariate nonparametric shape-constrained…

统计理论 · 数学 2026-04-13 Takeru Matsuda , Ting-Kam Leonard Wong

Symplectic eigenvalues are known to satisfy analogs of several classic eigenvalue inequalities. Of these is a set of weak supermajorization relations concerning symplectic eigenvalues that are weaker analogs of some majorization relations…

泛函分析 · 数学 2024-09-02 Shaowu Huang , Hemant K. Mishra

For a real or complex one-dimensional map satisfying a weak hyperbolicity assumption, we study the existence and statistical properties of physical measures, with respect to geometric reference measures. We also study geometric properties…

动力系统 · 数学 2014-06-12 Juan Rivera-Letelier , Weixiao Shen

The concept of a \emph{weak value} of a quantum observable was developed in the late 1980s by Aharonov and colleagues to characterize the value of an observable for a quantum system in the time interval between two projective measurements.…

量子物理 · 物理学 2015-12-17 J. M. Farinholt , A. Ghazarians , J. E. Troupe

Wasserstein distance, especially among symmetric positive-definite matrices, has broad and deep influences on development of artificial intelligence (AI) and other branches of computer science. A natural idea is to describe the geometry of…

微分几何 · 数学 2021-05-12 Yihao Luo , Shiqiang Zhang , Yueqi Cao , Huafei Sun