云南高校图书馆联盟文献共享服务平台- S-CURVATURE

检索规则说明：AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：范例一： (K=图书馆学 OR K=情报学) AND A=范并思　　　　范例二：J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual

全部期刊核心期刊 EI来源期刊 SCI来源期刊 CA来源期刊 CSCD来源期刊 CSSCI来源期刊

Navigation Finsler metrics on a gradient Ricci soliton: 《Applied Mathematics(A Journal of Chinese Universities)》2024年第2期266-275,共10页LI Ying MO Xiao-huan WANG Xiao-yang; Supported by the National Natural Science Foundation of China(11771020,12171005).; In this paper,we study a class of Finsler metrics defined by a vector field on a gradient Ricci soliton.We obtain a necessary and sufficient condition for these Finsler metrics on a compact gradient Ricci soliton to b...; 关键词：gradient Ricci soliton navigation Finsler metric isotropic S-curvature Ricci curvature Gaussian shrinking soliton

NATURALLY REDUCTIVE(α_(1),α_(2))METRICS: 《Acta Mathematica Scientia》2023年第4期1547-1560,共14页谭举许明; the National Natural Science Foundation of China(12131012,12001007,11821101);the Beijing Natural Science Foundation(1222003,Z180004);the Natural Science Foundation of Anhui province(1908085QA03)。; Letting F be a homogeneous(α_(1),α_(2))metric on the reductive homogeneous manifold G/H,we first characterize the natural reductiveness of F as a local f-product between naturally reductive Riemannian metrics.Second...; 关键词：(α_1 α_2)metric homogeneous Finsler space naturally reductive S-CURVATURE

The Characterizations and Constructions of Sprays of Isotropic Curvature: 《Acta Mathematica Sinica,English Series》2022年第9期1612-1620,共9页Xin Yue CHENG Ke Xiang CAO Chun Yan QING; Supported by the National Natural Science Foundation of China(Grant Nos.11871126 and 12141101);Technology Research Foundation of Chongqing Educational committee(Grant No.KJQN201900530);Chongqing Normal University Science Research Fund(Grant No.17XLB022)。; This paper discusses the sprays of isotropic curvature.We first determine the relationship betweenχ-curvatures of two projectively related sprays.Based on this,we find an approach to construct sprays of isotropic cur...; 关键词：SPRAY spray of isotropic curvature χ-curvature S-CURVATURE Funk metric

On conformal complex Finsler metrics被引量：1: 《Science China Mathematics》2022年第7期1517-1530,共14页Hongjun Li Chunhui Qiu Hongchuan Xia Guozhu Zhong; supported by National Natural Science Foundation of China(Grant Nos.12001165,11971401,12071386,11701494 and 11971415);Postdoctoral Research Foundation of China(Grant No.2019M652513);Postdoctoral Research Grant in Henan Province(Grant No.19030050);the Nanhu Scholars Program for Young Scholars of Xinyang Normal University。; In this paper,we study conformal transformations in complex Finsler geometry.We first prove that two weakly Kahler Finsler metrics cannot be conformal.Moreover,we give a necessary and sufficient condition for a strong...; 关键词：weakly Kahler Finsler metric locally conformal weakly Kahler Finsler metric GEODESIC holomorphic S-curvature mean Landsberg tensor

ON(α,β)-METRICS OF CONSTANT FLAG CURVATURE: 《Acta Mathematica Scientia》2022年第2期755-768,共14页Guangzu CHEN Xinyue CHENG; supported by the NationalNatural Science Foundation of China(11871126);the Science Foundation of Chongqing Normal University(17XLB022)。; In this paper,we study the(α,β)-metrics of constant flag curvature.We characterize almost regular(α,β)-metrics of constant flag curvature under the condition that β is a homothetic 1-form with respect to a.Furthe...; 关键词：(α β)-metric flag curvature S-CURVATURE mean Landsberg curvature Riemannian metric Minkowski metric homothetic 1-form

Properties of Berwald scalar curvature被引量：3: 《Frontiers of Mathematics in China》2020年第6期1143-1153,共11页Ming LI lIHONG zhang; supported in part by the National Natural Science Foundation of China(Grant Nos.11871126,11501067,11571184).; We prove that a Finsler manifold with vanishing Berwald scalar curvature has zero E-curvature.As a consequence,Landsberg manifolds with vanishing Berwald scalar curvature are Berwald manifolds.For(α,β)-metrics on ma...; 关键词：Landsberg curvature Berwald curvature E-curvature S-curvature Berwald scalar curvature

S-curvature of Doubly Warped Product of Finsler Manifolds被引量：3: 《Acta Mathematica Sinica,English Series》2020年第11期1292-1298,共7页Zhao YANG Yong HE Xiao Ling ZHANG; Natural Science Foundation of Xinjiang Uygur Autonomous Region,China(Grant No.2015211C277)。; Doubly warped product of Finsler manifolds is useful in theoretical physics,particularly in general relativity.In this paper,we study doubly warped product of Finsler manifolds with isotropic mean Berwald curvature or...; 关键词：Doubly warped product of Finsler manifold weak isotropic S-curvature isotropic mean Berwald curvature weakly Berwald manifolds

Comparison theorems on Finsler manifolds with weighted Ricci curvature bounded below被引量：1: 《Frontiers of Mathematics in China》2018年第2期435-448,共14页Songting YIN; This work was supported in part by the Natural Science Foundation of Anhui Province （No. 1608085MA03） and the National Natural Science Foundation of China （Grant No. 11471246）.; We obtain the Laplacian comparison theorem and the Bishop- Gromov comparison theorem on a Finsler manifold with the weighted Ricci curvature Ric∞ bounded below. As applications, we prove that if the weighted Ricci cu...; 关键词：Finsler manifold DISTORTION S-CURVATURE weighted Ricci curvature comparison theorem

On a class of two-dimensional Finsler manifolds of isotropic S-curvature: 《Science China Mathematics》2018年第1期57-72,共16页Xinyue Cheng Zhongmin Shen Guojun Yang; supported by National Natural Science Foundation of China(Grant Nos.11371386 and 11471226);the European Union’s Seventh Framework Programme(FP7/2007-2013)(Grant No.317721); For an(α, β)-metric(non-Randers type) of isotropic S-curvature on an n-dimensional manifold with non-constant norm ‖β‖α, we first show that n = 2, and then we characterize such a class of two-dimensional(α, β)...; 关键词：(α β)-metric Randers metric S-CURVATURE

On Generalized Douglas–Weyl(α, β)-Metrics被引量：1: 《Acta Mathematica Sinica,English Series》2015年第10期1611-1620,共10页Akbar TAYEBI Hassan SADEGHI; In this paper, we study generalized Douglas-Weyl （α,β）-metrics. Suppose that a regular （α,β）-metric F is not of Randers type. We prove that F is a generalized Douglas-Weyl metric with vanishing S-curvature if ...; 关键词：Generalized Douglas Weyl metric Weyl metric Douglas metric S-CURVATURE

S-CURVATURE