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相关论文: Improvement of graph theory Wei`s inequality

200 篇论文

In this paper, we sharpen and generalize Shafer's inequality for the arc tangent function. From this, some known results are refined.

经典分析与常微分方程 · 数学 2010-07-12 Feng Qi , Bai-Ni Guo

The parametric geometry of numbers has allowed to visualize the simultaneous approximation properties of a collection of real numbers through the combined graph of the related successive minima functions. Several inequalities among…

数论 · 数学 2021-03-18 Wolfgang M. Schmidt , Leonhard Summerer

In this paper, we hope to bring closer graph theory and consensus algorithms. Firstly, we give a brief introduction to graph theory by listing a concise definition. Then we analyze and visualize some commonly used graphs. Secondly, we…

离散数学 · 计算机科学 2021-01-27 Shen Zheng

In this paper, we establish some new general Opial inequalities for Widder derivatives.

泛函分析 · 数学 2014-03-12 Sajid Iqbal , Josip Pecarić

The Simes inequality has received considerable attention recently because of its close connection to some important multiple hypothesis testing procedures. We revisit in this article an old result on this inequality to clarify and…

统计理论 · 数学 2008-12-18 Sanat K. Sarkar

We give an explicit calculation of the Wu invariants for immersions of a finite graph into the plane and classify all generic immersions of a graph into the plane up to regular homotopy by the Wu invariant. This result is a generalization…

几何拓扑 · 数学 2020-05-19 Ryo Nikkuni

The present paper is devoted to the study of Jensen-Mercer-type inequalities. Our results generalize and improve some earlier results in the literature.

经典分析与常微分方程 · 数学 2019-05-07 Hamid Reza Moradi , Shigeru Furuichi

Certain excess versions of the Minkowski and H\"older inequalities are given. These new results generalize and improve the Minkowski and H\"older inequalities.

概率论 · 数学 2018-07-31 Iosif Pinelis

We extend the clique-coclique inequality, previously known to hold for graphs in association schemes and vertex-transitive graphs, to graphs in homogeneous coherent configurations and 1-walk regular graphs. We further generalize it to a…

Spectral characterization of graphs is an important topic in spectral graph theory, which has received a lot of attention from researchers in recent years. It is generally very hard to show a given graph to be determined by its spectrum.…

组合数学 · 数学 2021-08-03 Lihong Qiu , Wei Wang , Wei Wang , Hao Zhang

In this note we prove a graph inequality based on the sizes of the common neighbourhoods. We also characterize the extremal graphs that achieve the equality. The result was first discovered as a consequence of the classical Forster's…

组合数学 · 数学 2019-12-03 Xiaomin Chen , Fenglin Huang , Shuhan Zhou , Mingxuan Zou , Junchi Zuo

The aim of this work is to improve Wilker inequalities near the origin and {\pi}/2.

经典分析与常微分方程 · 数学 2013-12-24 Cristinel Mortici

We generalize the Li-Yau inequality for second derivatives and we also establish Li-Yau type inequality for fourth derivatives. Our derivation relies on the representation formula for the heat equation.

偏微分方程分析 · 数学 2023-12-29 Li-Chang Hung

The aim of this paper is to provide a self-contained proof of a general case of the coarea inequality, also known as the Eilenberg inequality. The result is known, but we are not aware of any place that a proof would be written with all…

经典分析与常微分方程 · 数学 2020-06-12 Behnam Esmayli , Piotr Hajłasz

We present a simple proof for the universality of invariant and equivariant tensorized graph neural networks. Our approach considers a restricted intermediate hypothetical model named Graph Homomorphism Model to reach the universality…

机器学习 · 计算机科学 2019-10-10 Takanori Maehara , Hoang NT

In this article, we obtain two interesting general inequalities concerning Riemman sums of convex functions, which in particular, sharpen Alzer's inequality and give a suitable converse for it.

经典分析与常微分方程 · 数学 2007-10-22 Jamal Rooin

In this paper we first extend a generalization of Ostrowski type inequality on time scales for functions whose derivatives are bounded and then unify corresponding continuous and discrete versions. We also point out some particular integral…

综合数学 · 数学 2011-04-05 Wenjun Liu , Quoc Anh Ngo , Wenbin Chen

In this paper, by a concise and elementary approach, we sharpen and generalize Shafer's inequality for the arc sine function, and some known results are extended and generalized.

经典分析与常微分方程 · 数学 2012-08-21 Feng Qi , Bai-Ni Guo

Our goal in the present paper is to give a new ergodic proof of a well-known Veech's result, build upon our previous works.

动力系统 · 数学 2017-03-07 Panagiotis Georgopoulos

The paper presents new and known results on estimates of important linear and nonlinear approximation characteristics of generalized Wiener classes of functions of several variables in different metrics.

经典分析与常微分方程 · 数学 2026-01-06 Andrii Shidlich