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- W2364476648 abstract "Under the hypothesis of perfect market,the classical CAPM proved that the expected return R was exactly linear with β factor.In fact,the efficient boundary of proxy didn't correspond to the efficient boundary of market.Without risk free assets,this paper studied on the positive definite covariance matrix and convex risk function of portfolio,and proved that the efficient degree of proxy security was in direct proportion to tis including numbers of security." @default.
- W2364476648 created "2016-06-24" @default.
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- W2364476648 date "2003-01-01" @default.
- W2364476648 modified "2023-09-25" @default.
- W2364476648 title "Study on Efficient Degree of Proxy Security" @default.
- W2364476648 hasPublicationYear "2003" @default.
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