The author studies the existence of p-blocks of defect zero and obtains some group-theoretic conditions for it.
本文研究了亏零p-块的存在性,得到一些亏零p-块存在的群论条件。
With the aid of on-the-spot investigation,the principle of runs test and P-P plot are applied to the study of sales income of a supermarket in Kunming.