There is a certain intuitive appeal to the vague notion that the 2 components of a vectorxare “less spread out” or “more nearly equal” 3 than are the components of a vectory. Not surprisingly, the notion 4 arises in a variety of contexts, and it can be made precise in a number 5 of ways. But in remarkably many cases, the appropriate precise state- 6 ment is that “xis majorized byy” (writtenx <yand defined ahead 7 in Definition A.1). Some of these cases are reviewed here.
KeywordsConvex Function Convex Hull Partial Order Income Inequality Lorenz Curve
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