
- UID
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- 帖子
- 270
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- 注册时间
- 2011-7-2
- 最后登录
- 2014-6-27
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How the corner portfolios are determined ?
I know it's a little bit strange to ask this question now.
But I just like to know how those corner portfolios in the text are determined (how to get those corner portfolios or how the corner portfolios are derived) ? |
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