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一类共形平坦的(α,β)-度量的研究 被引量:1

One Kind of Conformally Flat( α,β)-metrics
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摘要 研究了共形平坦的(α,β)-度量F=α(β/α),这里α是一个黎曼度量,β是流形上的1-形式。证明了共形平坦的弱Landsberg的(α,β)-度量一定是黎曼度量或者闵可夫斯基度量。进一步,如果(s)是关于s的多项式,那么共形平坦且具有相对迷向平均Landsberg曲率的(α,β)-度量也一定是黎曼的或者闵可夫斯基度量的。 In this paper, we studied eonformally flat (α,β)-metric F = αφ(β/α) on Finsler manifold (M, F). Here otis a Riemannian metric,β is a 1-form on M. The conclusion is that conformally flat weak Einstein (α,β)-metries must be either Riemannian or locally Minkowskian. And furthermore, under the condition that φ(s) is a polynomial ins, conformally flat (α,β)-metrics with relatively iso- tropic mean Landsberg curvature are also Riemannian metric or locally Minkowskian metrics.
出处 《重庆理工大学学报(自然科学)》 CAS 2014年第1期112-119,共8页 Journal of Chongqing University of Technology:Natural Science
基金 国家自然科学基金资助项目(11371386)
关键词 Β)-度量 共形平坦的芬斯勒度量 平均Landsberg曲率 弱Landsberg度量 (α,β) -metric conformally flat Finsler metric mean Landsberg curvature weak Lands-berg metric
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