Advanced Search
MyIDEAS: Login to save this article or follow this journal

Constrained suboptimality when prices are non-competitive

Contents:

Author Info

  • Herings, P. Jean-Jacques
  • Konovalov, Alexander

Abstract

The paper addresses the following question: how efficient is the market system in allocating resources if trade takes place at prices that are not competitive? Even though there are many partial answers to this question, an answer that stands comparison to the rigor by which the first and second welfare theorems are derived is lacking. We first prove a "Folk Theorem" on the generic suboptimality of equilibria at non-competitive prices. The more interesting problem is whether equilibria are constrained optimal, i.e. efficient relative to all allocations that are consistent with prices at which trade takes place. We discuss an optimality notion due to Bénassy, and argue that this notion admits no general conclusions. We then turn to the notion of p-optimality and give a necessary condition, called the separating property, for constrained optimality: each constrained household should be constrained in each constrained market. If the number of commodities is less than or equal to two, the case usually treated in the textbook, then this necessary condition is also sufficient. In that case equilibria are constrained optimal. When there are three or more commodities, two or more constrained households, and two or more constrained markets, this necessary condition is typically not sufficient and equilibria are generically constrained suboptimal.

Download Info

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
File URL: http://www.sciencedirect.com/science/article/B6VBY-4SPC0V6-1/2/002ebf2ac4e3b0163b43531fee5589d6
Download Restriction: Full text for ScienceDirect subscribers only

As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.

Bibliographic Info

Article provided by Elsevier in its journal Journal of Mathematical Economics.

Volume (Year): 45 (2009)
Issue (Month): 1-2 (January)
Pages: 43-58

as in new window
Handle: RePEc:eee:mateco:v:45:y:2009:i:1-2:p:43-58

Contact details of provider:
Web page: http://www.elsevier.com/locate/jmateco

Related research

Keywords: Non-competitive prices Welfare Pareto improvement;

Other versions of this item:

Find related papers by JEL classification:

References

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
as in new window
  1. Dreze, Jacques H. & Gollier, Christian, 1993. "Risk sharing on the labour market and second-best wage rigidities," European Economic Review, Elsevier, vol. 37(8), pages 1457-1482, December.
  2. P. Jean-Jacques Herings, 1997. "Endogenously determined price rigidities (*)," Economic Theory, Springer, vol. 9(3), pages 471-498.
  3. David Cass & Alessandro Citanna, 1998. "Pareto improving financial innovation in incomplete markets," Economic Theory, Springer, vol. 11(3), pages 467-494.
  4. Benassy, Jean-Pascal, 1993. "Nonclearing Markets: Microeconomic Concepts and Macroeconomic Applications," Journal of Economic Literature, American Economic Association, vol. 31(2), pages 732-61, June.
  5. CITANNA, Alessandro & CRES, Herve & DREZE, Jacques & HERINGS, Jean-Jacques & VILLANACCI, Antonio, 2001. "Continua of underemployment equilibria reflecting coordination failures, also at Walrasian prices," Les Cahiers de Recherche 732, HEC Paris.
  6. Aumann, R.J. & Dreze, J.H., 1984. "Values of markets with satiation or fixed prices," CORE Discussion Papers 1984033, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  7. HERINGS, Jean-Jacques & POLEMARCHAKIS, Heracles, 1998. "Pareto improving price regulation when the asset market is incomplete," CORE Discussion Papers 1998041, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  8. Mas-Colell,Andreu, 1985. "The Theory of General Economic Equilibrium," Cambridge Books, Cambridge University Press, number 9780521265140, April.
  9. Maskin, Eric S. & Tirole, Jean, 1984. "On the efficiency of fixed price equilibrium," Journal of Economic Theory, Elsevier, vol. 32(2), pages 317-327, April.
  10. Atsushi Kajii & Antonio Villanacci & Alessandro Citanna, 1998. "Constrained suboptimality in incomplete markets: a general approach and two applications," Economic Theory, Springer, vol. 11(3), pages 495-521.
  11. Laroque, Guy, 1978. "The Fixed Price Equilibria: Some Results in Local Comparative Statics," Econometrica, Econometric Society, vol. 46(5), pages 1127-54, September.
  12. Dreze, Jacques H. & Muller, Heinz, 1980. "Optimality properties of rationing schemes," Journal of Economic Theory, Elsevier, vol. 23(2), pages 131-149, October.
  13. Benassy Jean-pascal, 1974. "Neokeynesian disequilibrium theory in a monetary economy," CEPREMAP Working Papers (Couverture Orange) 7402, CEPREMAP.
  14. Polemarchakis, H M, 1979. "Incomplete Markets, Price Regulation, and Welfare," American Economic Review, American Economic Association, vol. 69(4), pages 662-69, September.
  15. Silvestre, Joaquim, 1982. "Fixprice analysis in exchange economies," Journal of Economic Theory, Elsevier, vol. 26(1), pages 28-58, February.
  16. Dreze, Jacques H, 1975. "Existence of an Exchange Equilibrium under Price Rigidities," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 16(2), pages 301-20, June.
  17. Grandmont, Jean-Michel, 1977. " The Logic of the Fix-price Method," Scandinavian Journal of Economics, Wiley Blackwell, vol. 79(2), pages 169-86.
  18. Tuinstra, Jan, 2000. "The emergence of political business cycles in a two-sector general equilibrium model," European Journal of Political Economy, Elsevier, vol. 16(3), pages 509-534, September.
Full references (including those not matched with items on IDEAS)

Citations

Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
as in new window

Cited by:
  1. Gerard van der Laan & Zaifu Yang, 2011. "An Ascending Multi-Item Auction with Financially Constrained Bidders," Discussion Papers 11/04, Department of Economics, University of York.
  2. Tommy Andersson & Zaifu Yang & Dongmo Zhang, 2014. "How to Efficiently Allocate Houses under Price Controls?," Discussion Papers 14/05, Department of Economics, University of York.
  3. Zaifu Yang & Dongmo Zhang, 2013. "On a Fundamental Property of Talman-Yang's Auction under Price Control," Discussion Papers 13/06, Department of Economics, University of York.

Lists

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

Statistics

Access and download statistics

Corrections

When requesting a correction, please mention this item's handle: RePEc:eee:mateco:v:45:y:2009:i:1-2:p:43-58. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Zhang, Lei).

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.