摘要
首先给出与下半模格定义等价的一个充分必要条件,其次对于不含无穷链的下半模格又给出三个等价的条件。
Firstly,it is given a necessary and sufficient condition,which equivalent to the definition of lower semi modular lattice.And then it is obtained three equivalence conditions to the lower semi modular lattice which not contained infinite chain.
出处
《阴山学刊（自然科学版）》
2011年第2期22-23,共2页
Yinshan Academic Journal(Natural Science Edition)
关键词
下半模格
无穷链
等价条件
Lower semi modular lattice
Infinite chain
Equivalence condition
