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THE MAIN INVARIANTS OF A COMPLEX FINSLER SPACE
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作者 Nicoleta ALDEA Gheorghe MUNTEANU 《Acta Mathematica Scientia》 SCIE CSCD 2014年第4期995-1011,共17页
In this paper we extend the results obtained in [3], where are investigated the general settings of the two-dimensional complex Finsler manifolds, with respect to a local complex Berwahl frame. The geometry of such ma... In this paper we extend the results obtained in [3], where are investigated the general settings of the two-dimensional complex Finsler manifolds, with respect to a local complex Berwahl frame. The geometry of such manifolds is controlled by three real invari- ants which live on T'M: two horizontal curvature invariants K and W and one vertical curvature invariant I. By means of these invariants are defined both the horizontal and the vertical holomorphic sectional curvatures. The complex Landsberg and Berwald spaces are of particular into, rest. Complex Berwald spaces coincide with K/ihler spaces, in the two - dimensional case, We establish the necessary and sufficient condition under which K is a constant and we obtain a characterization for the Kghler purely Hermitian spaces by the fact K = W=constant and I = 0. For the class of complex Berwald spaces we have K =W = 0. Finally, a classitication of two-dimensional complex Finsler spaces for which the horizontal curvature satisfies a special property is obtained. 展开更多
关键词 Berwald frame complex landsberg space complex Berwald space holomorphic sectional curvature
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Berwald空间的一个新判别法(英文)
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作者 邓少强 《南开大学学报(自然科学版)》 CAS CSCD 北大核心 2006年第4期47-49,共3页
给出了B erw a ld空间的一个新的判别方法.
关键词 landsberg空间 Berwlad空间 和乐群
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芬斯拉共形变换及其曲率不变性
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作者 杨文茂 程新跃 《学术问题研究》 2005年第1期104-108,共5页
本文研究在芬斯拉空间(M,F)上满足条件f*F=ec(x)F的共形变换f,在此F=F(x,y)为流形M上的芬斯拉度量,其中点x∈M,非零向量y∈TxM\{0}(M在点x处的切空间)。我们得到F中某些重要的几何量之间的若干关系,这些量包括黎曼曲率、利齐曲率、拉丁... 本文研究在芬斯拉空间(M,F)上满足条件f*F=ec(x)F的共形变换f,在此F=F(x,y)为流形M上的芬斯拉度量,其中点x∈M,非零向量y∈TxM\{0}(M在点x处的切空间)。我们得到F中某些重要的几何量之间的若干关系,这些量包括黎曼曲率、利齐曲率、拉丁伯格曲率、平均拉丁伯格曲率与曲率等。另外,我们还讨论了在(M,F)上分别保持这些曲率中某一种不变的那些共形变换的性质。 展开更多
关键词 芬斯拉空间 共形变换 黎曼曲率 利齐曲率 拉丁伯格曲率 S—曲率
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