It is known that poset theory is important to the study on greedoid theory.
所周知，偏序集理论在研
广义拟阵论中起着重作用。
It is known that poset theory is important to the study on greedoid theory.
所周知，偏序集理论在研广义拟阵论中起着重作用。
It is known that poset theory is important to the study on greedoid theory.But what is the direct relation between poset theory and the containment relations between different kinds of greedoids?
所周知,偏序集理论在研广义拟阵论中起着重作用.但是偏序集理论与不同种广义拟阵间的包含关系的
系是什么呢?
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