[ SmokeDetector | MS ] Few unique characters in answer, no whitespace in answer, repeating characters in answer (265): Modules and general linear group of order $n$ ✏️ by GreginGre on math.SE

One duplicate vote is needed on How do I prove that if $|x|<1$, then $\lim_{n\to\infty}x^n=0$? (and I don't think that the present two answers answer the question rigorously).