效用与消费者（用户）偏好的关系是什么？

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我想请教一下：效用与消费者（用户）偏好的关系？可以用效用表示偏好吗？

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关键词：消费者 关系 效用 偏好 用户 消费者

建议你读一读中级微观教材入门部分

well, first I am sorry that my pc is english edition:)

well, Utility and preferences in fact are two different streams of consumer theory in microeconomic analysis. utilites are choice baised structure, describing consumer's desirity to certain choice bundles when facing choosing, while preferences is an ordinal based approach, which could only rank consumer's choice, but can't tell out in how much degree that good 1 one is prefered to another. But these two theory could be connected by using weak axiom of revealed preference. more strictly incorporate of these two theories are based on strict assumptions on preferences, such as local nonsatility, monotone, continunity, convexity, and then, these two could be connected using utility maximumation problem and expenditure minimization problem, where walsrasam demand and Heckian demand could be equality at the optimal point:)

当消费者偏好满足一定假设（连续性）的时候可以用效用函数来表示偏好，mas-colle的书上证明效用函数的存在性时还用到了单调性这一假设

效用是消费者对商品的满意程度，与偏好没有直接联系。

效用随着消费者消费商品的数量的递增而递减；而偏好却不是这样的，偏好与消费的商品的数量没有直接关系。

以下是引用wzuoxuejing在2007-12-16 17:29:00的发言：
当消费者偏好满足一定假设（连续性）的时候可以用效用函数来表示偏好，mas-colle的书上证明效用函数的存在性时还用到了单调性这一假设

偏好具有连续性什么意思啊？

偏好连续性公理保证了突然的偏好逆转不会出现。