关于一个定义的解释，请求帮忙！

[复制链接]

字体大小: 正常放大

skysophie

3 主题	2 听众	64 积分

升级 62.11%

该用户从未签到

电梯直达

1^#

发表于 2010-9-18 15:05 |只看该作者 |倒序浏览

|招呼Ta 关注Ta

Definitions.-An arrangement of v objects (called treatments) in b sets
(called blocks) will be called a pairwise balanced design of index unity and type
(v; ki, k2, .. ., ki) if each block contains either k1, k2, .. ., or km treatments which
are all distinct (k, < v, k, $ kj), and every pair of distinct treatments occurs exactly
in one block of the design. If the number of blocks containing k, treatments is
b,, then clearly b = A bi, v(v-1) = i biki(k -1)。。。

谁能帮我解释一下，可以举个简单的例子。。谢谢！~

zan