On lattice of congruences on graph inverse semigroups

Autor:	Luo, Yongle, Wang, Zhengpan
Rok vydání:	2020
Předmět:	Mathematics - Group Theory 20M18
Druh dokumentu:	Working Paper
Popis:	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. Comment: 15 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2006.15745 Zobrazit plný text záznamu View this record from Arxiv