This paper proposes a simple algorithm based on a matrix formulation to compute the Esteban and Ray (ER) polarization index. It then shows how the algorithm introduced leads to quite a simple decomposition of polarization by income sources. Such a breakdown was not available hitherto. The...

This paper estimates the number of poor in various countries in Asia by applying an "amalgam poverty line", which is a weighted average of an absolute poverty line (such as $1.25 per day or $1.45 per day) and a reference income (such as the mean or the median income). The number of poor is...

Given a poverty line, a person who is non-poor (poor) currently may not be treated as non-poor (poor) in a vulnerable situation. This paper looks at the impact of vulnerability on the poverty line. The poverty line is adjusted in the presence of vulnerability such that the utility of a person at...

Inequality, bi-polarization and polarization are related but distinct concepts aiming at analysing the income distribution. This paper first recalls the main differences between these three notions of inequality, bipolarization and polarization. It then shows that a close look at the impact of...

This volume honors the lifetime and continuing contributions of Professor Jacques Silber. The book contains 15 papers, which were presented at the Fourth Meeting of the Society for the Study of Economic Inequality, Catania, Sicily, July 2011. Theoretical topics covered in Volume 20 include...