| 区组大小为3和4的单纯二重可分组设计的存在性 |
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| 引用本文： | 王金华. 区组大小为3和4的单纯二重可分组设计的存在性[J]. 上海交通大学学报, 2004, 38(1): 149-152,156 |
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| 作者姓名： | 王金华 |
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| 作者单位： | 上海交通大学,数学系,上海,200030 |
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| 摘 要： | 讨论区组大小为3和4的单纯二重可分组设计的存在性问题,即对k=3和4,证明了单纯(k,2)-NGDD(t^u)存在的必要条件也是充分的．
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| 关 键 词： | 单纯可分组设计 PBD-闭集 斜Room结构 |
| 文章编号： | 1006-2467(2004)01-0149-04 |
On the Existence of Simple Two-Fold Group Divisible Designs with Block Size 3 and 4 |
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| WANG Jin-hua. On the Existence of Simple Two-Fold Group Divisible Designs with Block Size 3 and 4[J]. Journal of Shanghai Jiaotong University, 2004, 38(1): 149-152,156 |
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| Authors: | WANG Jin-hua |
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| Abstract: | It was proved that for k=3 and 4 the necessary conditions for the existence of simple two-fold group divisible designs(k,2)-NGDD(t~u)are also sufficient. |
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| Keywords: | simple group divisible design PBD-closed set skew Room frame |
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