上三角矩阵环中的一些斜McCoy子环

Some skew McCoy subrings of upper triangular matrix ring

设σ是环R的一个同态,σ是由σ扩张的Mn(R)的一个同态.在本文中,找到了上三角矩阵环中的一个三阶的斜σ-McCoy子环、一个四阶的右斜σ-McCoy子环和一个四阶的左斜σ-McCoy子环.

Let σ be an endomorphism of ring R, σ be an extended enctomorpmsm of ring Mn（R）.A skewσ-McCoy subring of 3 × 3 upper triangular matrix ring is found, an right skewa-McCoy subring of 4 × 4 upper triangular matrix ring is found, and a left skew/r-McCoy subring of 4 × 4 upper triangular matrix ring is found.