七元格的示图

The Diagrams of Seven-element Lattices

本文首先述明两个有穷偏序集同构的条件,然后给出绘制几元有穷偏序集非同构Hasse示图的方法以及非同构七元格的全部示图。

This paper at first describes the conditions of discriminating the isomorphisms of two finite posets, then we give a method of describing the Hasse diagrams of posets with n-element. In the end, we give all the non-isomrphic diagrams of seven-element lattices.