Partially ordered space

在数学中，有序向量空间（ordered vector space）是带有偏序的向量空间，并且偏序与向量空间的运算是相容的。又称偏序向量空间（partially ordered vector space）。 给定实数 R {\displaystyle \mathbb {R} } 上的向量空间 V {\displaystyle

偏序集合（英語：Partially ordered set，简写Poset）是数学中，特别是序理论中，指配备了偏序关系的集合。 这个理论将对集合的元素进行排序、顺序或排列等直觉概念抽象化。这种排序不必是全部的，就是说不需要保证此集合内的所有对象的相互可比较性。偏序空間（英语：Partially ordered space）是具有閉偏序的拓撲空間。

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（原始内容存档于2020-11-09）.  Southwest Airlines passenger dies after being partially sucked out of window. The Guardian. 2018-04-18 [2018-04-18]. （原始内容存档于2020-11-21）