For anySuppose $R$ is a noncommutative ring R, does. What is the sufficient and necessary condition for $GL(R)$ embed$GL_n(R)$ embedding into $GL(F)$$GL_m(F)$ for some field F$F$?
In particular, what if $R$ is the group ring $\mathbb{Z}D_8$ or $\mathbb{Z}_2[D_8,t^{\pm1}]$, where $D_8$ is the dihedral group of order 8.
Thanks!.