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可分组设计
释义
可分组设计
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组合设计
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group divisible design
可分组设计
一类特殊的区组设计。设，为给定的正整数，，为给定的正整数集。设，式中为一个元集，构成的一个划分，且1">，是的一个子集族。的元素叫作组（group）， 的元素叫作区组（block）。若下述条件满足：①对任意，都有； ②对任意，都有； ③对任意与任意，都有；④中任意一对属于不同组的元素恰好同时包含在个区组中，则称为一个可分组设计，记作或简记为。叫作设计的阶，叫作相遇数。若包含个大小为的组，，且，则称是型为的。
Mathematics
＞组合数学、组合设计与图论＞组合设计＞释义
group divisible design
可分组设计
group-divisible design
可分组设计
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