Wong, Kam-Chau; Richter, Marcel K. - In: Economic Theory 14 (1999) 1, pp. 1-27
We provide a "computable counterexample" to the Arrow-Debreu competitive equilibrium existence theorem [2]. In particular, we find an exchange economy in which all components are (Turing) computable, but in which no competitive equilibrium is computable. This result can be interpreted as an...