在分配伪格上引入对合反自同构和矩阵M-P逆的概念，得到矩阵M-P逆的若干性质。

We introduce the conception of involutorial anti automorphism over distributive pseudolattices, define and get some properties of M-P inverse of matrix.

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然后基于内涵缩减，我们给出了从格上提取关联规则的算法伪码，两个性质被用来去除冗余的关联规则；

Then we give out the algorithms for extracting association rules from the lattice based on intent reduct, where two properties are exploited to remove the redundant rules.

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