[教与学] 求解答+指正 [推广有奖]

21楼

crozame 发表于 2011-11-26 07:10:01

抛光纸发表于 2011-11-26 06:47
1因为你头像是个女的
2语气吧~~~ 哈哈

这不是变相说我 “娘气么。。。” BS！

22楼

抛光纸 发表于 2011-12-4 22:08:39

crozame 发表于 2011-11-26 07:10
这不是变相说我 “娘气么。。。” BS！

经过长时间的纠结...那个best outcome还就是(0,0)
因为如果一直拿零,the expected outcome from infinite sequence 还是0...就算有discount factor也还是

就算用trigger strategy也只能是 a belongs to [0.75, 1) otherwise you will get a negative discount factor,但是if discount factor is convergent to zero, then it is possible the first mover to gets a positive payoff as he weight future payoff much much less, and leave the other player with a negative payoff. Suppose, this strategy can be support by SPE, it is not social optimal, coz the joint payoff must be negative. Therefore, the best outcome is (0,0).

Actually, it is a variants of Rock paper S.., if the a higher than 1, then the trigger strategy can be support by SPE iff both players patient enough.

23楼

crozame 发表于 2011-12-5 18:28:15

抛光纸发表于 2011-12-4 22:08
经过长时间的纠结...那个best outcome还就是(0,0)
因为如果一直拿零,the expected outcome from infinit ...

还要考虑到SOCIAL OPTIMAL?.....无限次重复让我头疼。。。。。
话说你本科就开始学REAL ANALYSIS 真是前途无量啊，。。

我最近在恶补呢，借了几本数学书，，，，挤时间来看，不过效果肯定没有正式上课好哇～～

24楼

抛光纸 发表于 2011-12-6 03:41:48

crozame 发表于 2011-12-5 18:28
还要考虑到SOCIAL OPTIMAL?.....无限次重复让我头疼。。。。。
话说你本科就开始学REAL ANALYSIS 真是前 ...

其实完整版是这样的...我是纯经济的等醒悟数学很重要以后学校就不允许选outside course了.而且LSE的Msc要求至少一年以上的calculus跟linear alg（但是现在又改成统计了囧~）...只好暑假去的berkeley上的summer school..本来计划是real analysis跟linear Alg.但是去了以后发现linear Alg是超高级的~~各种跟不上就换了个经济课.......但是8个星期学Rudin的那本蓝书各种噩梦 ...但是我上这个课之前数学只会differentiation&integration...但考试还会过了基本都是做题做出来的.因为听课基本都是天书...你基础比我好很多所以肯定不会有什么问题的啦!

其实你可以去看看university of London 的 external degree里面有一个diploma of math是LSE的.