In a less widely known contribution, Béla Martos (1966, Hungarian Academy of Sciences) introduced a generalized notion of concavity that is closely related to what is nowadays known as r-concavity in the operations research literature, and that is identical to what is nowadays known as...

Large deviations for fat tailed distributions, i.e. those that decay slower than exponential, are not only relatively likely, but they also occur in a rather peculiar way where a finite fraction of the whole sample deviation is concentrated on a single variable. The regime of large deviations is...

In this study we use the 2010-2013 Survey of Consumer Finances to analyze the allocation and location of financial assets in categorizing the tax-efficiency of investment portfolios by race/ethnicity. We find that Blacks and Hispanics tend to be more tax-efficient since they invest largely...