参股系统各公司总利润的计算方法

针对现代公司间相互参股日趋普遍日趋复杂的现象，在一定的假设之下。通过给出参股系统利润关系模型，系统地计算出每个公司所获得的利润．详细介绍如何确定一个参股系统，如何简化参股系统，如何判别利润关系模型是否有解及有解时求解的公式．并通过一个简单的例子说明虚拟利润产生的过程．本文还时参股系统结构进行分析，给出了分离一个参股系统及得到参股系统的核的方法，这些都非常有助于投资者及相关分析人士清晰地了解某家公司及其所在的参股系统．

The Calculational Methods of the Total Profit for Those Company Who Hold Shares Each Other

In the case that it goes more complex to calculate the profit for those company who hold shares each other, this paper, based on some certain assumption, gives a profit relation model to calculate the total profit for those company who hold shares each other.First,give the definition of the shares system (ss: The system composed by those companies who hold shares each other).Second, set up a profit relation model, then,how to estimate whether there are solutions of the profit relation model and give the formula to calculate the result when solutions are exist. Furthermore, this paper gives a method to separate the shares system and how to get the kernel of shares system which will be very helpful for investors and analysts to get useful information of shares system.