Income inequality and price elasticity of market demand: the case of crossing Lorenz curves
研究了收入分布变化（允许洛伦兹曲线交叉）对市场需求价格弹性的影响，推导了弹性增减的充分条件，并讨论了不同税收政策对需求弹性的含义。
This paper extends Ibragimov and Ibragimov (Econ Theory 32:579–587, 2007) in which the effect of changes income inequality on the price elasticity of market demand is characterized for the class of income distribution changes occurring through non-intersecting Lorenz curve shifts. We derive sufficient conditions for increase/decrease in price elasticity of market demand, under general changes in income distribution, allowing Lorenz curves to intersect as they shift. We conclude by drawing out implications of different types of tax policy changes for demand elasticity.