Equilibrium, trade, and capital accumulation

The paper summarizes the author's principal contributions to economic theor y: (1) one of the first rigorous proofs of the existence of competitive equ ilibrium; (2) existence of competitive equilibrium with weakened assumption s; (3) the minimum income approach to demand theory; (4) tatonnement stabil ity with weak gross substitutes; (5) a general theory of comparative advant age; (6) factor price equalization with attention to factor supplies; and ( 7) turnpike theory allowing for von Neumann facets and neighbourhood conver gence. JEL Classification Number: B10.