Let R be a commutative ring containing 1, T（R） is a non-Abelian group defined by the following.Generators: x<sub>ij</sub>（a）, i【j, i, j=1, 2,…, n, a∈R.
文摘Let R be a commutative ring containing 1, T（R） is a non-Abelian group defined by the following.Generators: x<sub>ij</sub>（a）, i【j, i, j=1, 2,…, n, a∈R.
