Market demand: a holistic theory and its verification

The paper presents a revision of the contemporary reductionistic demand theory, replacing the studying object, i.e. an individual, with a fuzzy collection of market buyers, regarded as a “statistical ensemble of consumers”. The new holistic market demand theory formally retains the neoclassical demand theory with reconsidering the utility function as a collective one. A nonparametric verification method is presented, which uses the economic (Konüs) and formula Fisher indexes. The method has a variational character based on the theory of ill-posed problems. Verification is carried out simultaneously with the construction of Konüs indexes. The method is demonstrated on an example of the new Giffen demand model.