Supported by the National Natural Science Foundation of China(10771100); Supported by the Natural Science Foundation of Education Committee of Jiangsu Province(06KJD110179)
In this paper, we consider the counting problem of matrix of set (Aij)kxn which satisfies Ui=1^k Uj=1 ^n Aij={α1,α2,…αm} and other conditions, and obtain some computational formulas which extend all the results...
Research supported by the National Natural Science Foundation of China(10771100);the Higher Schools Natural Science Basic Research Foundation of Jiangsu Province(06KJD110179)