作者: Michael Jerison
DOI: 10.1016/0165-1765(93)90032-8
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摘要: Abstract Russel [Economics Letters, 1983, 11, 223–224] claims to show that the main theorem in Gorman's ‘Some Engel curves’ [in A.S. Deaton, ed., Essays theory and measurement of consumer behavior, 1981 (Cambridge University Press, Cambridge)] follows from Lie's (1988) transformation groups [Theorie der Transformationsgruppen (B.F. Teubner, Leipzig)]. That claim is incorrect, but Russell's argument can be used prove a special case theorem.