T. Russell, HOW QUASI-RATIONAL ARE YOU - A BEHAVIORAL INTERPRETATION OF A 2 FORM WHICH MEASURES NONINTEGRABILITY OF A SYSTEM OF DEMAND EQUATIONS, Economics letters, 56(2), 1997, pp. 181-186
The symmetrized Slutsky matrix is used to provide an income measure of
non-integrability. This matrix, used as a two-form by Arnold to measu
re non-integrability of an exterior differential system, measures how
far quasi-rational (systematic but not utility maximizing) demand is F
rom being rational. (C) 1997 Elsevier Science S.A.