id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	work_issues	upstream	reviewer	author	merged	dependencies	stopgaps
7651	"c_graph backends should include a ""reversed"" copy for digraphs in the sparse case"	rlm	rlm	This is because the data structure for sparse graphs is itself directed, and in_neighbors is a slow function, as it needs to check each node.	enhancement	closed	major	sage-4.3	graph theory	fixed		ncohen jason		N/A	Nathann Cohen	Robert Miller	sage-4.3.rc1