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相关论文: Notes on the values of the volume entropy

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For a closed-loop control system with a digital channel between the sensor and the controller, the notion of invariance entropy quantifies the smallest average rate of information above which a given compact subset of the state space can be…

最优化与控制 · 数学 2021-11-19 Mahendra Singh Tomar , Christoph Kawan , Majid Zamani

It is shown that the volume entropy of a Hilbert geometry associated to an $n$-dimensional convex body of class $C^{1,1}$ equals $n-1$. To achieve this result, a new projective invariant of convex bodies, similar to the centro-affine area,…

微分几何 · 数学 2010-05-21 Gautier Berck , Andreas Bernig , Constantin Vernicos

We compute the entanglement entropy in a composite system separated by a finitely ramified boundary with the structure of a self-similar lattice graph. We derive the entropy as a function of the decimation factor which determines the…

量子物理 · 物理学 2018-11-14 Ibrahim Akal

For general metric theories of gravity, we compare the approach that describes-derives the field equations of gravity as a thermodynamic identity with the one which looks at them from entropy bounds. The comparison is made through the…

广义相对论与量子宇宙学 · 物理学 2015-10-28 Alessandro Pesci

It is shown how a metric structure can be induced in a simple way starting with a gauge structure and a preferred volume, by spontaneous symmetry breaking. A polynomial action, including coupling to matter, is constructed for the symmetric…

高能物理 - 理论 · 物理学 2009-10-31 Frank Wilczek

Entropy has been a common index to quantify the complexity of time series in a variety of fields. Here, we introduce increment entropy to measure the complexity of time series in which each increment is mapped into a word of two letters,…

数据分析、统计与概率 · 物理学 2016-01-20 Xiaofeng Liu , Aimin Jiang , Ning Xu , Jianru Xue

Permutation entropy quantifies the diversity of possible orderings of the values a random or deterministic system can take, as Shannon entropy quantifies the diversity of values. We show that the metric and permutation entropy…

混沌动力学 · 物理学 2016-08-16 Jose M. Amigo , Matthew B. Kennel , Ljupco Kocarev

In this paper, we consider a dynamical system on the Riemann sphere that evolves through a set-valued map, namely a holomorphic correspondence. Analogous to the investigation of the dynamics effected by a continuous map defined on a compact…

动力系统 · 数学 2026-03-05 Subith Gopinathan , Shrihari Sridharan

This is a continuation of our previous work (Advances in Mathematics 450 (2024), Paper No. 109768). In this paper, we characterize complete metrics with finite total Q-curvature as normal metrics for all dimensional cases. Secondly, we…

微分几何 · 数学 2024-09-16 Mingxiang Li

The topological entropy dimension is mainly used to distinguish the zero topological entropy systems. Two types of topological entropy dimensions, the classical entropy dimension and the Pesin entropy dimension, are investigated for…

动力系统 · 数学 2025-04-08 Chang-Bing Li

We consider some questions concerning the monotonicity properties of entropy and mean entropy of states on translationally invariant systems (classical lattice, quantum lattice and quantum continuous). By taking the property of strong…

数学物理 · 物理学 2008-11-26 Amanda R. Kay , Bernard S. Kay

This article examines the inverse problem for a lossy quantum graph that is internally excited and sensed. In particular, we supply an algorithmic methodology for deducing the topology and geometric structure of the underlying metric graph.…

度量几何 · 数学 2010-08-18 Michael Robinson

For any graph, we define a rank-1 operator on a bipartite tensor product space, with components associated to the set of vertices and edges respectively. We show that the partial traces of the operator are the Laplacian and the…

组合数学 · 数学 2013-05-01 Niel de Beaudrap , Vittorio Giovannetti , Simone Severini , Richard Wilson

In this paper, we first introduce the weighted forward reduced volume of Ricci flow. The weighted forward reduced volume, which related to expanders of Ricci flow, is well-defined on noncompact manifolds and monotone non-increasing under…

微分几何 · 数学 2011-03-21 Liang Cheng , Anqiang Zhu

We will discuss theoretical and experimental results concerning comparison of entropy of pseudo-Anosov maps and volume of their mapping tori. Recent study of Weil-Petersson geometry of the Teichm\"uller space tells us that they admit linear…

几何拓扑 · 数学 2008-12-17 Eiko Kin , Sadayoshi Kojima , Mitsuhiko Takasawa

We define the topological entropy per unit volume in parabolic PDE's such as the complex Ginzburg-Landau equation, and show that it exists, and is bounded by the upper Hausdorff dimension times the maximal expansion rate. We then give a…

数学物理 · 物理学 2009-10-31 P. Collet , J. -P. Eckmann

We develop a notion of entropy, using hyperbolic time, for laminations by hyperbolic Riemann surfaces. When the lamination is compact and transversally smooth, we show that the entropy is finite and the Poincare metric on leaves is…

动力系统 · 数学 2011-08-05 Tien-Cuong Dinh , Viet-Anh Nguyen , Nessim Sibony

We investigate the problem of the entropy of the mixture of sources. There is given an estimation of the entropy and entropy dimension of convex combination of measures. The proof is based on our alternative definition of the entropy based…

信息论 · 计算机科学 2011-10-31 Marek Smieja , Jacek Tabor

Adopting thin film brick-wall model, we calculate the entropy of a nonuniformly rectilinearly accelerating non-stationary black hole expressed by Kinnersley metric. Because the black hole is accelerated, the event horizon is axisymmetric.…

广义相对论与量子宇宙学 · 物理学 2007-05-23 He Han , Zhao Zheng

We are concerned with the study of different notions of curvature on graphs. We show that if a graph has stronger inner-outer curvature growth than a model graph, then it has faster volume growth too. We also study the relationhips of…

微分几何 · 数学 2020-09-29 Andrea Adriani , Alberto G. Setti