id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	revision
291	Problems with the GEQ/LEQ supply type in NetworkSimplex	Peter Kovacs	Peter Kovacs	"There are some problems with the handling of the GEQ/LEQ supply type in `NetworkSimplex`.

 1. The current version of the optimality conditions for these cases are not sufficient. We should also expect that all node potentials are non-positive (GEQ type) or non-negative (LEQ type).
 2. The initialization of the algorithm (artificial arcs and initial basis) is not correct for these inequality cases if we also have negative costs.
 3. Using LEQ and GEQ type we have to allow some of the artificial arcs to get into the basis again after they were removed."	defect	closed	critical	LEMON 1.1 release	core	hg main	fixed