  We analyze the Rybczynski sign pattern, which expresses the factor endowment
- commodity output relationships in a three-factor, two-good general
equilibrium trade model. The relationship determines whether a strong
Rybczynski result holds. We search for a sufficient condition for each
Rybczynski sign pattern to hold in a systematic manner, which no other studies
have derived. We assume factor-intensity ranking is constant. We use the EWS
(economy-wide substitution)-ratio vector and the Hadamard product in our
analysis. We show that the position of the EWS-ratio vector determines the
Rybczynski sign pattern. This article provides a basis for further
applications.

Economics