We present the general solutions, continuous at a point, of some functional equations on open subsets of the n-dimensional real space, originating from invariance of n-attribute utility functions under shift transformations. The utility functions are assumed to be nonconstant. We discuss invariance (i) on all attributes; (ii) on a proper subset of the attributes, and (iii) invariance with identical values of the shift parameters.
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Univ New South Wales, Sch Math & Stat, Sydney, NSW 2052, AustraliaUniv New South Wales, Sch Math & Stat, Sydney, NSW 2052, Australia
Rogers, C.
Ruggeri, T.
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Univ Bologna, Dept Math, Bologna, Italy
Univ Bologna, Alma Mater Res Ctr Appl Math AM2, Bologna, ItalyUniv New South Wales, Sch Math & Stat, Sydney, NSW 2052, Australia
Ruggeri, T.
Schief, W. K.
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Univ New South Wales, Sch Math & Stat, Sydney, NSW 2052, AustraliaUniv New South Wales, Sch Math & Stat, Sydney, NSW 2052, Australia
Schief, W. K.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES,
2020,
476
(2243):