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Do I understand the second welfare theorem correctly?

As far as I understand, the second welfare theorem says that all Pareto-optimal allocations can be reached by market equilibrium on free competitive markets. Yet it seems that this understanding is ...
1
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1answer
692 views

Is the convexity of production sets necessary for the welfare theorems?

I have read that the convexity of production sets (for instance non-increasing returns to scale) is not a necessary assumption for the first welfare theorem but it is for the second welfare theorem. ...
6
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2answers
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Pareto optimality with externalities

I'm reading the book "Economics of natural ressources and the environment" written by D. Pearce and R. Turner. They explain that the competitive equilibrium is not a Pareto optimum in case of (...
2
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1answer
912 views

equilibrium, optimum, and decentralizing the optimum

I'm reading a paper on parking: Anderson & de Palma, 2003, The economics of pricing parking. The authors repeatedly refer to either 'decentralizing the optimum' or 'the optimum can be ...