Kakwani and Lambert (Eur J Polit Econ 14(2):369–380, 1998) state three axioms which should be respected by an equitable tax system. Using the Atkinson–Plotnick–Kakwani re-ranking indexes of taxes, tax rates, and post-tax incomes, calculated with respect to the ranking of pre-tax income...

In this paper a method for analyzing the fairness of an income tax system when portioning the population into heterogeneous socio-economic groups is proposed. The equitable tax system is defined by the three axioms given by Kakwani and Lambert (1998) and, as they suggest, inequity is evaluated...

This article introduces a new matrix approach, based on pairwise income comparisons, to decompose the Atkinson-Plotnick-Kakwani re-ranking measure when income units are gathered into groups. As it is known the Atkinson-Plotnick-Kakwani re-ranking measure is defined by the difference between the...

Communication, in all its aspects excluding advertising, is an intrinsic element in every marketing strategy at whatever level. A quantitative analysis on the adevrtising and communication's feedback may be of absolute importance for the company, the research team and the marketing chief. In...

In a society's managing core quantitative marketing has a central role. Specific use of mathematic techniques integrated with made-for softwares is a resource no manager can ignore before getting into strategic decisions concerning whatever field of a product's study or promotion. Managing to...

A client's importance is never the same for a manager, as it is not supposed to be beneficial. Managing to see the difference between client and client and dealing according to that is a focus point in the study of a bussinness' situation. A modern marketing strategy cannot go without a precise...