Journal Article The Elasticity of Derived Net Supply and a Generalized Le Chatelier Principle Get access W. E. Diewert W. E. Diewert University of British Columbia Search for other works by this author on: Oxford Academic Google Scholar The Review of Economic Studies, Volume 48, Issue 1, January 1981, Pages 63–80, https://doi.org/10.2307/2297121 Published: 01 January 1981 Article history Received: 01 August 1977 Accepted: 01 March 1980 Published: 01 January 1981

Journal Article Symmetry Conditions for Market Demand Functions Get access W. E. Diewert W. E. Diewert University of British Columbia Search for other works by this author on: Oxford Academic Google Scholar The Review of Economic Studies, Volume 47, Issue 3, April 1980, Pages 595–601, https://doi.org/10.2307/2297310 Published: 01 April 1980 Article history Received: 01 January 1977 Accepted: 01 August 1979 Published: 01 April 1980

Journal Article Afriat and Revealed Preference Theory Get access W. E. Diewert W. E. Diewert University of British Columbia Search for other works by this author on: Oxford Academic Google Scholar The Review of Economic Studies, Volume 40, Issue 3, July 1973, Pages 419–425, https://doi.org/10.2307/2296461 Published: 01 July 1973

The paper investigates the problem of tariff reform in a small open multi-household economy that only has tariffs and domestic commodity taxes as policy instruments. The concept of a productivity improvement in tariffs and taxes is introduced and conditions for its existence are established. We prove that a Pareto-improving change in tariffs and domestic taxes exists if a productivity-improving change in tariffs exists and if the Weymark condition on the matrix of household demands holds. Conditions are established for particular tariff reforms, such as proportional reductions and reductions of extreme rates, to yield Pareto improvements in welfare.