Pure exchange system An allocation A=(x,.x) is feasible if ∑x≤m, for any I=1…L @, is the endowments of commodity l Edgeworth box:2×2Pure exchange system • An allocation A= (x1 ,…xI ) is feasible if • is the endowments of commodity l • Edgeworth box: 2×2 1 , for any 1, I li l i x l L  =   = l