Research And Application Of Statistic Management System Based On Data Warehouse

defining structure of two-parameter quantum group corresponding to the exceptional Lie algebra G₂. In CH.4, we obtain a realization of U_r,s(G₂). In CH.5, we give Lusztig's Q-isomorphisms from U_r,s(G₂) to its associated quantum group U_s-1,r-1(G₂).Recently, Prof. Naihong Hu and Dr. Hongliang Zhang have found the defining structure of two-parameter quantum group associated to the affine Lie algebra of type A.