科研之友
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摘要
Recent results establishing evidence of intractability for such restrictive utility functions as additively separable, piecewise-linear and concave, under both Fisher and Arrow-Debreu market models, have prompted the question of whether we have failed to capture some essential elements of real markets, which seem to do a good job of finding prices that maintain parity between supply and demand. The main point of this paper is to show that even nonseparable, concave utility functions can be handled efficiently in a suitably chosen, though natural, realistic, and useful, market model. Our model allows for perfect price discrimination, supports unique equilibrium prices, and satisfies both welfare theorems.
- 出版日期2013
