…x ≿ α y means that x is preferred over y by α. A cardinal preference relation is a relation that defines how much one prefers another for all possible pairs of two objects. When a cardinal preference relation satisfies the three conditions given by von Neumann and O. Morgenstern, then for any three objects x, y, and z, if x ≿ α y and y ≿ β z, then x ≿ γ z (γ = α + β). … *Some of the terminology explanations that refer to "cardinality preference relationships" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…xをyよりαだけ選好することをx≿αyと表す。可能なすべての二つの対象の組について,どちらをどれだけ選好するかを定めたものを基数選好関係という。基数選好関係がフォン・ノイマン,O.モルゲンシュテルンの与えた3条件を満たすときには,任意の三つの対象x,y,zについて,x≿αyかつy≿βzならば,x≿γz(γ=α+β)となる。… ※「基数選好関係」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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