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Unformatted text preview: Von Neumann-Morgenstern - Proof I: Lecture XII Charles B. Moss September 16, 2010 I. A:A If u ≺ v then α < β implies (1- α ) u + αv ≺ (1- β ) u + βv (1) 1. The direction of the assertion is that if u ≺ v and α < β , then the preference ordering must follow. 2. To demonstrate this we start with axiom 3:B:a given 0 ≤ α ≤ 1 u ≺ v ⇒ u ≺ αu + (1- α ) v ⇒ u ≺ (1- β ) + βv (2) 3. Intuitively, this axiom states that if u is the inferior bundle, then any bundle constructed with any combination of v must be pre- ferred to u . 4. bf Axiom 3:B:b reverses this axiom by saying that if u is the pre- ferred bundle then it must also be preferred to a bundle containing any amount of v . u v ⇒ u αu + (1- α ) v (3) 5. We start from the first equation, replace with and by replacing the first in the right-hand side with preceding equation yields (1- β ) u + βv ((1- β ) u + βv ) + (1- γ ) v (4) 1 AEB 6182 Agricultural Risk Analysis and Decision Making Professor Charles B. MossProfessor Charles B....
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This note was uploaded on 02/01/2012 for the course AEB 6182 taught by Professor Weldon during the Fall '08 term at University of Florida.
- Fall '08