in this article, author has tried, based on a comparsion between meaning of classification with meaning of inequality, to reach a particular definition of classification which elements such as social ineguality could be recognized within it. although, at the first glance, ineguality could be seen as a natural phnenomenon, or as a genetice one, studies have proved that classification in societie...

In this paper we study the determinants and distribution of Argentina ́s educational quality measured by PISA 2000 reading test scores. To do that, we estimate educational production functions at the mean of the distribution using survey weighted regressions and at different parts of the score ́s distribution with quantile regressions. We also estimate the Theil 2 Index of inequality applied to t...

where capG(S, S̄) is the total weight of the edges crossing from S to S̄ = V − S. We show that the minimum generalized eigenvalue λ(LG, LH) of the pair of Laplacians LG and LH satisfies λ(LG, LH) ≥ φ(G,H)φ(G)/8, where φ(G) is the usual conductance of G. A generalized cut that meets this bound can be obtained from the generalized eigenvector corresponding to λ(LG, LH). The inequality complements a...