偏好 - 經濟

※ 引述《Majestic (我家的貓不見客)》之銘言：
: MasCollel and el. Microeconomic Theory p.46
: Example 3.c.1: The Lexicographic Preference Relation.
: 2
: For simplicity, assume that X = R
: +
: Define x>= y if either "x1>y1" or "x1=y1 and x2>=y2"
~~
這裡應該不是 >=,
而是 at least as good as.
( 也就是那個歪七扭八的 >= )

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