Talk:Circulation problem

ill-defined
The definition for the Multi-commodity circulation problem seems insufficient. Consider the reduction to multi-commodity flow.

Multi-commodity flow - If Ki(si,ti,di) denotes a demand of di for commodity i from si to ti, create an edge (ti,si) with l(ti,si)=c(ti,si)=di for all commodities i. Let l(u,v)=0 for all other edges.

This has no way of addressing the demand satisfaction for multi-commodity flow. At least, I believe there should be a lower bound for each individual flow terms in order to reduce the flow to circulation.--Mgccl (talk) 20:44, 29 June 2013 (UTC)

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