When the definite matrix is non-positive,this paper studies the model of portfolio investment and it gives calculating method for optimal investment coefficient of proportionality,efficient boundary,unnecessary portfolio as well as arbitrage chance.
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One direct is from enterprise move to market . under this condition, this paper ,basing one the theory of transaction cost ,consider that VC is result from the change of efficient boundary of corporation.
从这个角度本文首先从交易费用角度分析虚拟企业的是企业效率边界变化的结果。
参考来源 - 虚拟企业形成机理研究及其应用·2,447,543篇论文数据，部分数据来源于NoteExpress
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