The Phelps-Friedman theory that the long-run Phillips curve is perfectly inelastic at the natural rate of unemployment has been criticized by Tobin (1972) and others. This paper accepts tentatively the Phelps-Friedman hypothesis and enquires into what follows from it. We do this because the...

The paper is divided into two parts: one-dimensional markets and two-dimensional markets. Also, we develop both one and two-dimensional models. Within each, we distinguish (a) bounded, (b) unbounded but finite, and (c) unbounded, infinite spaces. Among other things, we show: in one dimension,...

On an infinitely-extensible plane (with uniform customer-density) the socially-optimal configuration of firms is a regular hexagonal lattice. Will the free market necessarily produce this configuration? We argue that the currently-accepted, affirmative answer has been erroneously derived from...