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相关论文: Distinguishing properties of weak slice conditions…

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A general framework is developed to investigate the properties of useful choices of stationary spacelike slicings of stationary spacetimes whose congruences of timelike orthogonal trajectories are interpreted as the world lines of an…

广义相对论与量子宇宙学 · 物理学 2015-09-23 Donato Bini , Eduardo Bittencourt , Andrea Geralico , Robert T. Jantzen

In this paper, we investigate special curves on a weak r-helix submanifold in Euclidean n-space E^{n}. Also, we give the important relations between weak r-helix submanifolds and the special curves such as line of curvature, asymptotic…

微分几何 · 数学 2016-06-10 Evren Ziplar , Ali şenol , Yusuf Yayli

In the literature on slice analysis in the hypercomplex setting, there are two main approaches to define slice regular functions in one variable: one consists in requiring that the restriction to any complex plane is holomorphic (with the…

复变函数 · 数学 2024-06-28 Xinyuan Dou , Guangbin Ren , Irene Sabadini , Ting Yang

In this work, we have introduced and studied some basic geometric properties of extended weakly symmetric spaces. After classification of this structure we have also established the existence of such a space by presenting a non-trivial…

In this work, we give some new characterizations for inclined curves and slant helices in n-dimensional Euclidean space E^{n}. Morever, we consider the pre-characterizations about inclined curves and slant helices and reconfigure them.

微分几何 · 数学 2016-06-13 Ali Şenol , Evren Ziplar , Yusuf Yayli , İsmail Gök

This paper provides conditions (i) to distinguish weak supercyclicity form supercyclicity for operators acting on normed and Banach spaces, and also (ii) to ensure when weak supercyclicity implies weak stability.

泛函分析 · 数学 2021-01-26 C. S. Kubrusly , B. P. Duggal

This paper extends the $*$-product from slice analysis to weakly slice analysis in several quaternionic variables, focusing on non-axially symmetric domains. It diverges from traditional applications in axially symmetric domains to address…

复变函数 · 数学 2024-01-10 Xinyuan Dou , Ming Jin , Guangbin Ren , Ting Yang

In this paper, we give a definition of weak stability condition on a triangulated category. The difference between our definition and existing definitions is that we allow objects in the kernel to have non-maximal phases. We then construct…

代数几何 · 数学 2024-10-04 Tristan C. Colllins , Jason Lo , Yun Shi , Shing-Tung Yau

Systems of ordinary differential equations (or dynamical forms in Lagrangian mechanics), induced by embeddings of smooth fibered manifolds over one-dimensional basis, are considered in the class of variational equations. For a given…

微分几何 · 数学 2018-12-07 Demeter Krupka , Zbyněk Urban , Jana Volná

A weak metric on a set is a function that satisfies the axioms of a metric except the symmetry and the separation axioms. In the present paper we introduced a weak metric, called the Apollonian weak metric, on any subset of a Euclidean…

度量几何 · 数学 2008-04-04 Athanase Papadopoulos , Marc Troyanov

In this work, notion of a slant helix is extended to space E$^n$. Necessary and sufficient conditions to be a slant helix in the Euclidean $n-$space are presented. Moreover, we express some integral characterizations of such curves in terms…

微分几何 · 数学 2009-04-08 Ahmad Ali , Melih Turgut

Several characterizations of weak cotype 2 and weak Hilbert spaces are given in terms of basis constants and other structural invariants of Banach spaces. For finite-dimensional spaces, characterizations depending on subspaces of fixed…

泛函分析 · 数学 2009-09-25 P. Mankiewicz , Nicole Tomczak-Jaegermann

On R^n endowed with a riemannian metric of bounded nonpositive curvature, the weakly convex closed subsets are topologically trivial. The stability of such subsets under intersection characterizes the euclidean spaces.

微分几何 · 数学 2016-09-07 Stephane Grognet

We introduce the notion of a weakly reflective submanifold, which is an austere submanifold with a certain global condition, and study its fundamental properties. Using these, we determine weakly reflective orbits and austere orbits of…

微分几何 · 数学 2007-05-23 Osamu Ikawa , Takashi Sakai , Hiroyuki Tasaki

The domain morphology of weakly disordered ferromagnets, quenched from the high-temperature phase to the low-temperature phase, is studied using numerical simulations. We find that the geometrical properties of the coarsening domain…

无序系统与神经网络 · 物理学 2009-11-13 Alberto Sicilia , Jeferson J. Arenzon , Alan J. Bray , Leticia F. Cugliandolo

Weak sharp minimality is a notion emerged in optimization, whose utility is largeley recognized in the convergence analysis of algorithms for solving extremum problems as well as in the study of the perturbation behaviour of such problems.…

最优化与控制 · 数学 2013-01-23 Amos Uderzo

There were obtained some properties of weakly m-convex sets. Various kinds of the problem of shadow were investigated. There was obtained the lower estimation for the number of balls that are necessary to create a shadow at the point of the…

度量几何 · 数学 2017-03-21 Hajdzhaa Dakhil , Yurii Zelinskii , Bogdan Klishchuk

We consider skew ruled surfaces in the three-dimensional Euclidean space and some geometrically distinguished families of curves on them whose normal curvature has a concrete form. The aim of this paper is to find and classify all ruled…

综合数学 · 数学 2015-12-02 Stylianos Stamatakis

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

We investigate uniqueness of weak solutions for a system of partial differential equations capturing behavior of magnetoelastic materials. This system couples the Navier-Stokes equations with evolutionary equations for the deformation…

偏微分方程分析 · 数学 2018-06-13 Anja Schlömerkemper , Josef Žabenský
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