Classification of finite subgroups of $\mathrm{GL}_3(\mathbb{R})$
2064
Finite subgroups of orthogonal transformations in $\mathbb{R}^3$
69694
Classify orbits of conjugating action on $GL_2(\mathbb{C})$
114987
How many connected components does $\mathrm{GL}_n(\mathbb R)$ have?
15387
Order of $GL(n, \mathbb Z_p)$
44165
the image of normal subgroups
115014
Classification of automorphisms of projective space
141265
Finding a normal and not normal subgroup of $S_3$
85677
Is there a free subgroup of rank 3 in $SO_3$?
78263
Prove $GL_n(\Bbb{R})/SL_n(\Bbb{R}) \cong \Bbb{R}^\times$
23037
Computing the order of $\mathrm{SL}_2(\mathbb F_p)$ as the kernel of $\mathrm{GL}_2(\mathbb F_p)$
138297
Let $G = GL_2\mathbb (R)$. Show that $T$ is a subgroup of $G$
102284
$GL(n,\mathbb R)/SL(n,\mathbb R)$ is isomophic to $\mathbb R^\times$
43645
Show that $G/H\cong S_3$
64269
Finding the minimal $n$ such that a given finite group $G$ is a subgroup of $S_n$
41695
Conjugate class in the dihedral group
59041
Centre of $GL_n(\mathbb R)$
122353
Status of the classification of non-finitely generated abelian groups.