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Abstract – In this paper two new concepts are introduced: the similarity and the (∗,δ)-equality of fuzzy choice functions. We investigate the manner the similarity and (∗,δ...
To a fuzzy choice function C we assign the indicators of revealed preference WAFRP(C), SAFRP(C) and the indicators of congruence WFCA(C), SFCA(C). These indicators measure the deg...
This paper deals with a model of decision– making in two stages. In the first stage from a set of expertises one chooses the most rational ones, while in the second stage one o...
The revealed preference is a central subject in classical consumer theory. Authors like Samuelson, Arrow, Richter, Sen, Uzawa and others have proposed an axiomatic setting of reve...