整闭偏序群(integrally closed po-group) 类特殊的阿基米德偏序群.偏序群G称为整闭的,是指:对任意a,bEG,若na簇b(n=1,2,"""),则a簇0.整闭偏序群是阿基米德偏序群.备格群的任意子群是整闭偏序群,从而是阿基米德偏序群.