论文标题
在构图逆向半群中的晶格
On lattice of congruences on graph inverse semigroups
论文作者
论文摘要
最近用下划线图描述了图形逆半群的一致性。基于此类描述，我们表明一致性的晶格反向半群是上半模型，但不是较低的半模型。
Congruences on a graph inverse semigroup were recently described in terms of the underline graph. Based on such descriptions, we show that the lattice of congruences on a graph inverse semigroup is upper semimodular but not lower semimodular.
