there is a problem in my textbook as follows: Why the finite group $SL(2,5)$ is isomorphic to a subgroup of $SL(2,11)$? Thanks for the answers
2026-04-07 14:37:13.1775572633
SL(2,5) and SL(2,11)
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I would say because it can. The subgroup of $SL(2,11)$ generated by $\begin{pmatrix} 0&-1\\ 1 & 0 \\\end{pmatrix} $ and $\begin{pmatrix} 3 &1\\ 0 & 4 \\\end{pmatrix}$ is isomorphic to $SL(2,5)$