EXAMPLES OF SECTIONAL CURVATURE WITH PRESCRIBED SYMMETRY ON 3{MANIFOLDS

EXAMPLES OF SECTIONAL CURVATURE WITH PRESCRIBED SYMMETRY ON 3{MANIFOLDS
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3{流形上具有指定对称性的截面曲率示例

DOI:
10.21136/cmj.1995.128512
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发表时间:
1992
期刊:
--
影响因子:
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通讯作者:
Santiago de Compostela
Santiago de Compostela
中科院分区:
--
文献类型:
--
作者:
L. A. Cordero;P. E. Parker;Facultad de Matem;Santiago de Compostela

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在前文中,我们确定了截面曲率的可能的点态对称群作为有理函数。我们确定了具有常对称的自然约化齐次空间,并给出了它们的一些例子的一般描述。在这里,我们展示了其中一些例子的度量张量的显式形式。我们还给出了一些利用翘曲积的非齐次例子,并开始研究对称类型如何在连通空间上变化。
In a previous paper, we determined the possi- ble pointwise symmetry groups of sectional curvature con- sidered as a rational function. We determined the naturally reductive homogeneous spaces with constant symmetry, and gave general descriptions of some examples of them. Here, we exhibit explicit forms of the metric tensors on some of these examples. We also give some inhomogeneous examples utilizing warped products, and begin the study of how the symmetry type can vary on a connected space.
DOI: 10.1017/9781009253161
发表时间: 2023-02
期刊: --
影响因子: --
作者:
S. Hawking;G. Ellis
通讯作者: S. Hawking;G. Ellis