试析对中国信息化水平的基本判断 |
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引用本文: | 姜爱林.试析对中国信息化水平的基本判断[J].陕西理工学院学报(社会科学版),2002,20(3):1-7. |
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作者姓名: | 姜爱林 |
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作者单位: | 国土资源部中国土地勘测规划院,地政研究中心,北京,100029 |
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摘 要: | 首先给出偏序集拟阵上秩的概念 ,并由此产生了偏序集拟阵间 (秩 )强映射的概念 ,这种强映射满足交换性质 .然而 ,之后给出的 (平坦 )强映射却不满足交换性质 .说明拟阵间的强映射之交换性质是不能直接推广到偏序集拟阵上 .
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关 键 词: | 偏序集拟阵 秩 平坦 强映射 |
文章编号: | 1007-0842(2002)04-0001-07 |
修稿时间: | 2002年2月15日 |
On the Development Level of China's Informationalization |
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Abstract: | This thesis first gives the concept of rank on poset matroids, followed by temp ting the (rank)strong maps between poset matroids and showing that this strong m aps satisfies the commutative property. However,the (flat) strong maps between poset matroids cannot satisfy the commutative property. These results imply th at poset matroid is not a generalization of matroids mechanically, but a combin atorial structure had plentiful intension herself. |
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Keywords: | poset matroid rank flat strong map |
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