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Given a compact space X and two commuting continuous open surjective maps sigma_1, sigma_2 : X --> X, we construct certain C*-algebras that reflect the dynamics of the N^2-action. When the maps sigma_1, sigma_2 are local homeomorphisms,…

算子代数 · 数学 2007-05-23 Valentin Deaconu

Four years ago the Extended Scale Relativity (ESR) theory in C-spaces (Clifford manifolds) was proposed as the plausible physical foundations of string theory. In such theory the speed of light and the minimum Planck scale are the two…

高能物理 - 理论 · 物理学 2007-05-23 Carlos Castro

The principal theory of this paper comprises a technique for constructing associative, coassociative and Cayley submanifolds of Euclidean space with symmetries, using first-order ordinary differential equations. Explicit examples of…

微分几何 · 数学 2008-03-04 Jason Lotay

Spin layer groups are the crystallographic symmetry groups with a periodic plane, and their symmetry operations are inherited from three-dimensional (3D) spin space groups. However, the direct application of 3D symmetry groups to…

材料科学 · 物理学 2026-05-26 Zeying Zhang , Gui-Bin Liu , Mu Tian , Run-Wu Zhang , Zhi-Ming Yu , Yugui Yao

An embedding method to get $q$-deformations for the non--semisimple algebras generating the motion groups of $N$--dimensional flat spaces is presented. This method gives a global and simultaneous scheme of $q$-deformation for all $iso(p,q)$…

高能物理 - 理论 · 物理学 2009-10-28 A. Ballesteros , F. J. Herranz , M. A. del Olmo , M. Santander

Our goal is to generalize the Choe-Hoppe helicoid and Clifford cones in Euclidean space. By sweeping out $L$ indpendent Clifford cones in ${\mathbb{R}}^{2N+2}$ via the multi-screw motion, we construct minimal submanifolds in…

微分几何 · 数学 2015-10-27 Eunjoo Lee , Hojoo Lee

In this paper we examine a new class of five dimensional (5D) exact solutions in extra dimension gravity possessing Lie algebroid symmetry. The constructions provide a motivation for the theory of Clifford nonholonomic algebroids elaborated…

高能物理 - 理论 · 物理学 2007-05-23 Sergiu I. Vacaru

We study the dynamics of a piecewise map defined on the set of three pairwise nonparallel, nonconcurrent lines in $\mathbb{R}^2$. The geometric map of study may be analogized to the billiard map with a different reflection rule so that each…

动力系统 · 数学 2024-08-30 Samuel Everett

We review and slightly improve the known k-polysymplectic Marsden--Weinstein reduction theory by removing some technical conditions on k-polysymplectic momentum maps by developing a theory of affine Lie group actions for k-polysymplectic…

微分几何 · 数学 2023-06-21 J. de Lucas , X. Rivas , S. Vilariño , B. M. Zawora

Simply-connected homogeneous spacetimes for kinematical and aristotelian Lie algebras (with space isotropy) have recently been classified in all dimensions. In this paper, we continue the study of these "maximally symmetric" spacetimes by…

高能物理 - 理论 · 物理学 2019-08-26 José Figueroa-O'Farrill , Ross Grassie , Stefan Prohazka

Physical systems with symmetries are described by functions containing kinematical and dynamical parts. We consider the case when kinematical symmetries are described by a noncompact semisimple real Lie group $G$. Then separation of…

数学物理 · 物理学 2008-04-24 Ivan Kachuryk , Anatoliy Klimyk

The objective of this series is to study metric geometric properties of (coarse) disjoint unions of amenable Cayley graphs. We employ the Cayley topology and observe connections between large scale structure of metric spaces and group…

群论 · 数学 2019-03-13 Masato Mimura , Hiroki Sako

In this paper, we introduce local expressions for discrete Mechanics. To apply our results simultaneously to several interesting cases, we derive these local expressions in the framework of Lie groupoids, following the program proposed by…

数值分析 · 数学 2013-03-19 Juan Carlos Marrero , David Martín de Diego , Eduardo Martínez

We propose a novel, multi-layered planning approach for computing paths that satisfy both kinodynamic and spatiotemporal constraints. Our three-part framework first establishes potential sequences to meet spatial constraints, using them to…

机器人学 · 计算机科学 2025-05-23 Jeel Chatrola , Abhiroop Ajith , Kevin Leahy , Constantinos Chamzas

Discrete forms of the mean and directed curvature are constructed on piecewise flat manifolds, providing local curvature approximations for smooth manifolds embedded in both Euclidean and non-Euclidean spaces. The resulting expressions take…

微分几何 · 数学 2023-04-04 Rory Conboye

Euclidean distance matrices (EDMs) are a major tool for localization from distances, with applications ranging from protein structure determination to global positioning and manifold learning. They are, however, static objects which serve…

信号处理 · 电气工程与系统科学 2019-03-19 Puoya Tabaghi , Ivan Dokmanić , Martin Vetterli

We present a way to derive a deformation of special relativistic kinematics (possible low energy signal of a quantum theory of gravity) from the geometry of a maximally symmetric curved momentum space. The deformed kinematics is fixed (up…

高能物理 - 理论 · 物理学 2019-12-02 J. M. Carmona , J. L. Cortes , J. J. Relancio

Based on a pair of cohomology operations on so called $\delta-2$-formal spaces, we construct the integral cohomology rings of the classifying spaces of the Lie groups $Spin(n)$ and $Spin^{c}(n)$. As applications, we introduce characteristic…

代数拓扑 · 数学 2019-07-04 Haibao Duan

We define a class of Euclidean distances on weighted graphs, enabling to perform thermodynamic soft graph clustering. The class can be constructed form the "raw coordinates" encountered in spectral clustering, and can be extended by means…

机器学习 · 统计学 2010-09-15 François Bavaud

It is shown that since the geometric spinors are elements of Clifford algebras, they must have the same transformation properties as any other Clifford number. In general, a Clifford number $\Phi$ transforms into a new Clifford number…

高能物理 - 理论 · 物理学 2013-10-25 Matej Pavšič