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This paper studies the statistical characteristics of Chinese surnames, first names and full names based on a credible sample. The distribution of Chinese surnames, unlike that in any other countries, shows an exponential pattern in the top part and a power-law pattern in the tail part. The distributions of Chinese first names and full names have the characteristics of a power law with different exponents. Finally, the interrelation of the first name and the surname is demonstrated by using a computer simulation and an exhibition of the name network. Chinese people take the surname into account when they choose a first name for somebody. 相似文献
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1 福建省数学高考改革的轨迹 自1977年恢复高考以来,福建省数学高考改革的轨迹与全国数学高考改革轨迹基本一样,大致可以划分为三个阶段. 相似文献
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讨论在一定条件下Abel范畴的recollement经过范畴的平凡扩张可诱导出一个新recollement的问题.将结果应用到环上的模范畴,得到平凡(单点)扩张环具有Morita等价不变性;结合加法范畴的幂等完备化,构造出一个幂等完备化范畴关于范畴平凡扩张的recollement. 相似文献
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分次PP环的一个结论 总被引:3,自引:0,他引:3
本文证明了Z-型分次简约环(?)是PP环(Baer环)的充要条件是R是分次PP环(分次Baer环). 相似文献