It is shown that, whatever the multiplicity of the integrated world equilibrium, (i) factor prices are equalized if and only if the distribution of primary factors between trading countries can be represented by a point in or on the boundary of a certain convex subset of R[superscript m], where...

The paper describes a class of imperfectly competitive world economies for which factor price equalization is inevitable. Specifically, it is shown that factor price equalization must prevail if the trading economies differ at most in scale, if they share a constant-returns no-joint-products...

In the late 1960s and early 1970s there was a strong revival of interest in the role of factor-market distortions in those branches of our subject which rely on the Lerner-Samuelson two-by-two model of production. Among the legacies from that period were several comparative statical propositions...