Route-flow nonuniqueness at a Wardrop equilibrium
= Route-flow nonuniqueness at a Wardrop equilibrium
Strictly increasing link delays make <Wardrop equilibrium> link <throughputs> unique, but route decompositions of those throughputs can differ. With unit demand through two successive stages of two parallel links each and link delay $D(u)=u$, the four-route vectors $(t,1/2-t,1/2-t,t)$ for $0\leq t\leq1/2$ all induce link loads $1/2$. All routes then have equal delay one.