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We show that the superposition principle applies to coupled nonlinear Schr\"odinger equations with cubic nonlinearity where exact solutions may be obtained as a linear combination of other exact solutions. This is possible due to the…

可精确求解与可积系统 · 物理学 2021-08-03 L. Al Sakkaf , U. Al Khawaja

This article develops mathematical formalisms and provides numerical methods for studying the evolution of measures in nonsmooth dynamical systems using the continuity equation. The nonsmooth dynamical system is described by an evolution…

最优化与控制 · 数学 2025-06-24 Saroj Prasad Chhatoi , Aneel Tanwani , Didier Henrion

We study completeness properties of reparametrization invariant Sobolev metrics of order $n\ge 2$ on the space of manifold valued open and closed immersed curves. In particular, for several important cases of metrics, we show that Sobolev…

微分几何 · 数学 2024-01-31 Martin Bauer , Cy Maor , Peter W. Michor

In this paper we develop a measure-theoretic method to treat problems in hypergraph theory. Our central theorem is a correspondence principle between three objects: An increasing hypergraph sequence, a measurable set in an ultraproduct…

组合数学 · 数学 2008-10-27 Gábor Elek , Balázs Szegedy

We investigate the advantage of coherent superposition of two different coded channels in quantum metrology. In a continuous variable system, we show that the Heisenberg limit $1/N$ can be beaten by the coherent superposition without the…

量子物理 · 物理学 2021-12-15 Dong Xie , Chunling Xu , An Min Wang

In this paper we generalize the well-known notions of affine arclength and affine hypersurface measure to submanifolds of any dimension $d$ in $\mathbb R^n$ , $1 \leq d \leq n-1$. We show that a canonical affine invariant measure exists and…

经典分析与常微分方程 · 数学 2019-09-18 Philip T. Gressman

Some examples of three-dimensional metrics of constant curvature defined by solutions of nonlinear integrable differential equations and their generalizations are constructed. The properties of Riemann extensions of the metrics of constant…

微分几何 · 数学 2009-11-11 V. Dryuma

The problem of measurement in quantum mechanics is reanalyzed within a general, strictly probabilistic framework (without reduction postulate). Based on a novel comprehensive definition of measurement the natural emergence of objective…

量子物理 · 物理学 2007-05-23 Markus Simonius

In finite probability theory, events are subsets of the outcome set. Subsets can be represented by 1-dimensional column vectors. By extending the representation of events to two dimensional matrices, we can introduce "superposition events."…

量子物理 · 物理学 2020-06-18 David Ellerman

We consider the Schr\"odinger equations with arbitrary (large) power non-linearity on the three-dimensional torus. We construct non-trivial probability measures supported on Sobolev spaces and show that the equations are globally well-posed…

偏微分方程分析 · 数学 2021-08-20 Mouhamadou Sy

We consider extensions of quasiconformal maps and the uniformization theorem to the setting of metric spaces $X$ homeomorphic to $\mathbb R^2$. Given a measure $\mu$ on such a space, we introduce $\mu$-quasiconformal maps $f:X \to \mathbb…

复变函数 · 数学 2021-05-25 Kai Rajala , Martti Rasimus , Matthew Romney

The Hardy-Littlewood-P?olya majorization theorem is extended to the framework of some spaces with a curved geometry (such as the global NPC spaces and the Wasserstein spaces). We also discuss the connection between our concept of…

度量几何 · 数学 2012-04-05 Constantin P. Niculescu , Ionel Roventa

We enumerate the singular algebraic curves in a complete linear system on a smooth projective surface. The system must be suitably ample in a rather precise sense. The curves may have up to eight nodes, or a triple point of a given type and…

代数几何 · 数学 2007-05-23 Steven Kleiman , Ragni Piene

Quantum mechanics is an extremely successful theory that agrees with every experiment. However, the principle of linear superposition, a central tenet of the theory, apparently contradicts a commonplace observation: macroscopic objects are…

量子物理 · 物理学 2015-03-20 Angelo Bassi , Kinjalk Lochan , Seema Satin , Tejinder P. Singh , Hendrik Ulbricht

Three notions of complementarity - operational, probabilistic, and value complementarity - are reanalysed with respect to the question of joint measurements and compared with reference to some examples of canonically conjugate observables.…

量子物理 · 物理学 2011-01-04 P. Busch , P. J. Lahti

A variational equation of the third order in three-dimensional space is proposed which describes autoparallel curves of some connection.

微分几何 · 数学 2014-06-25 R. Ya. Matsyuk

The basic goal of quantization for probability distribution is to reduce the number of values, which is typically uncountable, describing a probability distribution to some finite set and thus to make an approximation of a continuous…

概率论 · 数学 2022-08-23 Joseph Rosenblatt , Mrinal Kanti Roychowdhury

This paper investigates the relationship between quantization of measures and metric mean dimension of topological dynamical systems. We introduce the concept of mean quantization dimension for invariant probability measures and establish a…

动力系统 · 数学 2026-05-21 Maria Carvalho , Gustavo Pessil

Here Lipschitz conditions are used as a primary tool, for studying curves in metric spaces in particular.

度量几何 · 数学 2007-10-16 Stephen Semmes

Based on the Carath\'eodory -Pesin structure theory[11], we introduce three notions of topological pressure of a proper map and provide some properties of these notions. For the proper map of a locally compact separable metric space, we…

动力系统 · 数学 2018-02-14 Dongkui Ma , Nuanni Fan