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Integrability and Generalized Separability

Thibault Fally ()

No 25025, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: This paper examines demand systems where the demand for a good depends only on its own price, consumer income, and a single aggregator synthesizing information on all other prices. This generalizes directly-separable preferences where the Lagrange multiplier provides such an aggregator. As indicated by Gorman (1972), symmetry of the Slutsky substitution terms implies that such demand can take only one of two simple forms. Conversely, here we show that only weak conditions ensure that such demand systems are integrable, i.e. can be derived from the maximization of a well-behaved utility function. This paper further studies useful properties and applications of these demand systems.

JEL-codes: D11 D40 L13 (search for similar items in EconPapers)
Date: 2018-09
New Economics Papers: this item is included in nep-upt
Note: DEV IO ITI
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