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On the Maps Between Antimatroids 被引量:1
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作者 毛华 《Northeastern Mathematical Journal》 CSCD 2006年第1期55-66,共12页
In this paper, the definitions of the most common and elementary mappings between matroids are extended to antimatroids first. Then the poset theory is used to find out the fiats of an antimatroid and obtain all of st... In this paper, the definitions of the most common and elementary mappings between matroids are extended to antimatroids first. Then the poset theory is used to find out the fiats of an antimatroid and obtain all of strong maps for a given antimatroid. Besides, the poset theory is also used to deal with the relationships among the mappings between antimatroids. All the discussion is connected with poset theory. This claims that poset theory is an important tool for the study of antimatroid theory. 展开更多
关键词 POSET Hasse diagram antimatroid MAP
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反拟阵自同构群的公理系统及其性质
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作者 毛华 刘三阳 《工程数学学报》 CSCD 北大核心 2004年第2期155-159,共5页
给出了反拟阵自同构群的定义,利用反拟阵的公理系统建立其自同构群公理系统;在此基础上,讨论了拟阵与反反拟阵之间的一些关系。
关键词 反拟阵 自同构 拟阵
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