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相关论文: An AP-Structure with Finslerian Flavor: Path Equat…

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In this paper, systems of linear differential equations with crisp real coefficients and with initial condition described by a vector of fuzzy numbers are studied. A new method based on the geometric representations of linear…

数值分析 · 计算机科学 2011-11-03 N. Gasilov , Sh. G. Amrahov , A. Golayoglu Fatullayev

Absolute parallelism geometry is frequently used for physical applications. It has two main defects, from the point of view of applications. The first is the identical vanishing of its curvature tensor. The second is that its autoparallel…

广义相对论与量子宇宙学 · 物理学 2014-11-17 M. I. Wanas

A piecewise flat Finsler metric on a triangulated surface $M$ is a metric whose restriction to any triangle is a flat triangle in some Minkowski space with straight edges. One of the main purposes of this work is to study the properties of…

微分几何 · 数学 2017-04-28 Ming Xu , Shaoqiang Deng

Finsler metrics are direct generalizations of Riemannian metrics such that the quadratic Riemannian indicatrices in the tangent spaces of a manifold are replaced by more general convex bodies as unit spheres. A linear connection on the base…

微分几何 · 数学 2022-04-05 Csaba Vincze , Márk Oláh

In these Notes, a comprehensive description of the universal fractal geometry of conformally-invariant scaling curves or interfaces, in the plane or half-plane, is given. The present approach focuses on deriving critical exponents…

数学物理 · 物理学 2007-05-23 Bertrand Duplantier

We briefly review some basic concepts of parallel displacement in Finsler geometry. In general relativity, the parallel translation of objects along the congruence of the fundamental observer corresponds to the evolution in time. By…

广义相对论与量子宇宙学 · 物理学 2013-12-18 A. P. Kouretsis , M. Stathakopoulos , P. C. Stavrinos

This paper presents a fast and parsimonious parsing method to accurately and robustly detect a vectorized wireframe in an input image with a single forward pass. The proposed method is end-to-end trainable, consisting of three components:…

计算机视觉与模式识别 · 计算机科学 2020-03-04 Nan Xue , Tianfu Wu , Song Bai , Fu-Dong Wang , Gui-Song Xia , Liangpei Zhang , Philip H. S. Torr

Special coordinate systems are constructed in a neighborhood of a point or of a curve. Taylor expansions can then be easily inferred for the metric, the connection, or the Finsler Lagrangian in terms of curvature invariants. These…

广义相对论与量子宇宙学 · 物理学 2017-02-27 E. Minguzzi

The field equation of orthodox general relativity are written in the context of a geometry with non-vanishing torsion, the Absolute Parallelism (AP) geometry. An AP-structure, with homogeneity and isotropy, is used for cosmological…

广义相对论与量子宇宙学 · 物理学 2012-11-08 M. I. Wanas , H. A. Hassan

The present work is a review of a series of papers, published in the last ten years, comprising an attempt to find a suitable avenue from geometry to quantum. It shows clearly that, any non-symmetric geometry admits some built-in quantum…

广义相对论与量子宇宙学 · 物理学 2007-05-23 M. I. Wanas

Adopting the pullback formalism, a new linear connection in Finsler geometry has been introduced and investigated. Such connection unifies all formerly known Finsler connections and some other connections not introduced so far. Also, our…

微分几何 · 数学 2022-09-16 A. Soleiman , Ebtsam H. Taha

In this paper, we study Absolute Parallelism (AP-) geometry on the tangent bundle $TM$ of a manifold $M$. Accordingly, all geometric objects defined in this geometry are not only functions of the positional argument $x$, but also depend on…

微分几何 · 数学 2015-05-13 Nabil. L. Youssef , A. M. Sid-Ahmed

In this paper I shall show how notions of Finsler geometry can be used to construct a new type of geometry using a scalar field, f, on the cotangent bundle of a differentiable manifold, M. This new geometry will be called Lorentzian…

广义相对论与量子宇宙学 · 物理学 2020-09-08 Gregory W. Horndeski

In this work we study the set of strictly accretive matrices, that is, the set of matrices with positive definite Hermitian part, and show that the set can be interpreted as a smooth manifold. Using the recently proposed symmetric polar…

度量几何 · 数学 2020-11-30 Axel Ringh , Li Qiu

The present work continues the program of summing planar Feynman graphs on the world sheet. Although it is based on the same classical action introduced in the earlier work, there are important new features: Instead of the path integral…

高能物理 - 理论 · 物理学 2014-11-18 Korkut Bardakci

Let $\ast$ and $\widetilde {\ast}$ denote the convolution of two analytic maps and that of an analytic map and a harmonic map respectively. Pokhrel [1] proved that if $f = h+\overline{g}$ is a harmonic map convex in the direction of…

复变函数 · 数学 2014-01-03 Raj Kumar , Sushma Gupta , Sukhjit Singh

Horizontal endomorphisms, almost complex structures, vertical, horizontal and complete lifts on prolongation of a Lie algebroid are considered. Then using exact sequences, semisprays are constructed. Moreover, important geometrical objects…

微分几何 · 数学 2013-10-29 Esmaeil Peyghan

A natural extension of a homogeneous geodesic in homogeneous Riemannian spaces $G/H$, known as a two-step homogeneous geodesic, can be expressed of the form $\gamma(t)=\pi(\exp(tx)\exp(ty))$, where $x$ and $y$ are elements of the Lie…

微分几何 · 数学 2026-04-30 Masoumeh Hosseini , Hamid Reza Salimi Moghaddam

We revisit certain path-lifting and path-continuation properties of abstract maps as described in the work of F. Browder and R. Rheindboldt in 1950-1960s, and apply their elegant theory to exponential maps. We obtain thereby a number of…

微分几何 · 数学 2021-08-02 Ivan P. Costa e Silva , José L. Flores , Kledilson P. R. Honorato

In Minkowski geometry the metric features are based on a compact convex body containing the origin in its interior. This body works as a unit ball with its boundary formed by the unit vectors. Using one-homogeneous extension we have a…

微分几何 · 数学 2013-12-23 Csaba Vincze