isometry group of $\mathbb{R}^n$
124933
Isometry group question
82843
Subgroups of $\Bbb{R}^n$ that are closed and discrete
102284
$GL(n,\mathbb R)/SL(n,\mathbb R)$ is isomophic to $\mathbb R^\times$
78580
Is $SL_n(\mathbb{R})$ a normal subgroup in $GL_n(\mathbb{R})$?
90365
Riemannian Manifolds with $n(n+1)/2$ dimensional symmetry group
127491
Isometric isomorphism between $R^2$ and $R$
136083
Show that $\sigma\circ\phi : G_1 \to G_3$ is an isomorphism
134362
Rotation of group of rigid motions of cube is isomorphic to $S_{4}$
47975
Closed cone in the euclidean space $\mathbb{R}^n$
102299
Bijection between $\mathbb{R}^n$ and $\mathbb{R}^m$
23579
If $G$ is isomorphic to $H$, then ${\rm Aut}(G)$ is isomorphic to ${\rm Aut}(H)$
41846
$(\mathbb{R}^n,\|\cdot\|_{p})$ is isometrically isomorphic to $(\mathbb{R}^n,\|\cdot\|_{q})$ iff $p=q,$
64261
example of not surjective isometry on a bounded not closed set.
145000
Fundamental group of GL(n,C) is isomorphic to Z. How to learn to prove facts like this?
24561
$\mathbb S_n$ as semidirect product
145220
Homology Groups of $S^n$
37351
Group of Order $p^2$ Isomorphic to $\mathbb{Z}_{p^2}$ or $\mathbb{Z}_{p}$ $\times$ $\mathbb{Z}_{p}$