Increasing returns to scale is an area in economics that has recently become the focus of much attention. While most firms operate under constant or decreasing return to scale on their relevant range of production, some firms produce goods or services with a technology which exhibits increasing returns to scale at levels of production which are large relative to the market. These goods are an important component of economic activity in a modern economy and are typically commodities produced either by a public sector or, as in the U.S., by regulated utilities. In this study, the author analyzes increasing returns using general equilibrium theory to take into account the interactions between production in the public and the private sector, and the effects of financing the public sector on the redistribution of income.

The growth of information economics has lead to a substantial re-consideration of the role of prices. Instead of the conventional neo-classical view of prices as straightforward indicators of scarcity, information economics emphasises that prices can be sources from which agents infer information and means by which they communicate. Prices and Knowledge analyses different theoretical approaches to the role of prices in situations of imperfect information. It shows that whilst the `informational efficiency' approach of Grossman and Stiglitz and the `bounded rationality theory' of Nelson and Simon are useful, neither goes far enough in considering situations of disequilibrium.

This punchy book unites mainline mathematical economics and sometimes idiosyncratic political economy. Freshness is brought to the market concept giving general equilibrium theory a new lease of life, and an opening of thought on such matters as free trade, globalization and the environment. Where most theories of general equilibrium have been based on utility maximizing traders, Afriat here maintains the view that the topic essentially is concerned with aggregates and that anything to do with utility is at best secondary if not spurious. The book goes on to discuss political economy, in particular the idea of 'optimum', and its abuses, especially in doctrine related to the market. This novel book will be of equal appeal to mathematical thinkers, those interested in the theory of market and political economists.

This book presents an original exposition of general equilibrium theory for advanced undergraduate and graduate-level students of economics. It contains detailed discussions of economic efficiency, competitive equilibrium, the first and second welfare theorems, the Kuhn-Tucker approach to general equilibrium, the Arrow-Debreu model, and rational expectations equilibrium and the permanent income hypothesis. Truman Bewley also treats optimal growth and overlapping generations models as special cases of the general equilibrium model. He uses the model and the first and second welfare theorems to explain the main ideas of insurance, capital theory, growth theory, and social security. It enables him to present a unified approach to portions of macro- as well as microeconomic theory. The book contains problems sets for most chapters.

General Equilibrium Theory: An Introduction treats the classic Arrow-Debreu general equilibrium model in a form accessible to graduate students and advanced undergraduates in economics and mathematics. Topics covered include mathematical preliminaries, households and firms, existence of general equilibrium, Pareto efficiency of general equilibrium, the First and Second Fundamental Theorems of Welfare Economics, the core and core convergences, future markets over time and contingent commodity markets under uncertainty. Demand, supply, and excess demand appear first as (point-valued) functions, then optionally as (set-valued) correspondences. The mathematics presented (with elementary proofs of the theorems) includes a real analysis, the Brouwer fixed point theorem, and separating and supporting hyperplane theorems. Optional chapters introduce the existence of equilibrium with set-valued supply and demand, the mathematics of upper and lower hemicontinuous correspondences, and the Kakutani fixed point theorem. The treatment emphasizes clarity and accessibility to the student through use of examples and intuition.