id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
zk51vd69n54	Weijia Wang	Closure Operator And Lattice Property of Root Systems	1904		.txt	text/plain	344	12	51	First we consider the signed groupoid set, a concept which was developed by Dyer and generalizes many notions including Coxeter groups, Coxeter groupoids and Coxeter-like groupoid studied by Brink and Howlett. In particular it is a crucial tool for understanding Coxeter groups and various groupoids which demonstrate Coxeter like properties.	cache/zk51vd69n54.txt	txt/zk51vd69n54.txt