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Spatial dynamics and convergence: The spatial AK model

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Abstract

We study the optimal dynamics of an AK economy where population is uniformly distributed along the unit circle. Locations only differ in initial capital endowments. Spatio-temporal capital dynamics are described by a parabolic partial differential equation. The application of the maximum principle leads to necessary but non-sufficient first-order conditions. Thanks to the linearity of the production technology and the special spatial setting considered, the value-fonction of the problem is found explicitly, and the (unique) optimal control is identified in feedback form. Despite constant returns to capital, we prove that the spatio-temporal dynamics, induced by the willingness of the planner to give the same (detrended) consumption over space and time, lead to convergence in the level of capital across locations in the long-run.

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File URL: ftp://mse.univ-paris1.fr/pub/mse/CES2013/13047.pdf
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Paper provided by Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne in its series Documents de travail du Centre d'Economie de la Sorbonne with number 13047.

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Length: 17 pages
Date of creation: Apr 2013
Date of revision:
Handle: RePEc:mse:cesdoc:13047

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Keywords: Economic growth; spatial dynamics; optimal control; partial-differential equations.;

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References

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  1. Silvia Faggian, 2008. "Maximum Principle for Boundary Control Problems Arising in Optimal Investment with Vintage Capital," Working Papers 181, Department of Applied Mathematics, Università Ca' Foscari Venezia.
  2. Raouf Boucekkine & Carmen Camacho & Benteng Zou, 2006. "Bridging the gap between growth theory and the new economic geography: The spatial Ramsey model," DEGIT Conference Papers c011_039, DEGIT, Dynamics, Economic Growth, and International Trade.
  3. Chatterjee, Satyajit, 1994. "Transitional dynamics and the distribution of wealth in a neoclassical growth model," Journal of Public Economics, Elsevier, vol. 54(1), pages 97-119, May.
  4. Anastasios Xepapadeas & William Brock, 2009. "General Pattern Formation in Recursive Dynamical Systems Models in Economics," Working Papers 2009.49, Fondazione Eni Enrico Mattei.
  5. Klaus Desmet & Esteban Rossi-Hansberg, 2010. "On Spatial Dynamics," Journal of Regional Science, Wiley Blackwell, vol. 50(1), pages 43-63.
  6. Fabbri, Giorgio & Gozzi, Fausto, 2008. "Solving optimal growth models with vintage capital: The dynamic programming approach," Journal of Economic Theory, Elsevier, vol. 143(1), pages 331-373, November.
  7. Paulo Brito, 2004. "The Dynamics of Growth and Distribution in a Spatially Heterogeneous World," Working Papers Department of Economics 2004/14, ISEG - School of Economics and Management, Department of Economics, University of Lisbon.
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Cited by:
  1. Raouf Boucekkine & Giorgio Fabbri & Patrick-Antoine Pintus, 2011. "On the optimal control of a linear neutral differential equation arising in economics," Working Papers halshs-00576770, HAL.
  2. Brock, William A. & Xepapadeas, Anastasios & Yannacopoulos, Athanasios N., 2014. "Spatial externalities and agglomeration in a competitive industry," Journal of Economic Dynamics and Control, Elsevier, vol. 42(C), pages 143-174.
  3. Gani Aldashev & Serik Aldashev & Timoteo Carletti, 2014. "On Convergence in the Spatial AK Growth Models," Papers 1401.4887, arXiv.org.
  4. Paulo Brito, 2012. "Global Endogenous Growth and Distributional Dynamics," DEGIT Conference Papers c017_053, DEGIT, Dynamics, Economic Growth, and International Trade.
  5. Carmen Camacho & Agustín Pérez-Barahona, 2012. "Land use dynamics and the environment," Documents de travail du Centre d'Economie de la Sorbonne 12012, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
  6. Raouf Boucekkine & Carmen Camacho & Giorgio Fabbri, 2013. "On the Optimal Control of Some Parabolic Partial Differential Equations Arising in Economics," AMSE Working Papers 1334, Aix-Marseille School of Economics, Marseille, France, revised 05 Jun 2013.
  7. repec:hal:journl:halshs-00674020 is not listed on IDEAS
  8. William Brock & Anastasios Xepapadeas & Athanasios Yannacopoulos, 2014. "Optimal Agglomerations in Dynamic Economics," DEOS Working Papers 1403, Athens University of Economics and Business.
  9. repec:hal:cesptp:halshs-00831042 is not listed on IDEAS
  10. William Brock & Anastasios Xepapadeas & Athanasios Yannacopoulos, 2014. "Optimal Control in Space and Time and the Management of Environmental Resources," DEOS Working Papers 1402, Athens University of Economics and Business.
  11. repec:hal:wpaper:halshs-00831042 is not listed on IDEAS

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