economic theorem
2.By relaxing the main assumptions in the MM Theorem and introducing such variables as taxation, bankruptcy cost, asymmetric information, agency cost and transaction cost, this paper proves that in real economic situations, capital structure influences corporate value through three channels, namely tax avoidance effect corporate governance mechanism and signal mechanism.
3.The third, in virtue of statistical method and upon the above-mentioned study , this article builds up a new method-efficiency curve to estimate DDI which theorem is to set a structure of income distribution suitable for economic growing, and puts forward a new index named efficiency deviation degree to estimate the difference between efficiency curve and the actual layout of distribution income, so, the condition of personal income distribution of various countries or various places can be shown;
