$H \cong \frac{Gl_2(\mathbb{R})}{SO(2)}$
58135
Quotient group $SL(2,\mathbb{R})/SO(2,\mathbb{R})$
53327
$C_2 \times C_2$ and $C_4$
105363
$\mathbb Z^n/\langle (a,...,a) \rangle \cong \mathbb Z^{n-1} \oplus \mathbb Z/\langle a \rangle$
132653
How to show that $\mathfrak{sl}_n(\mathbb{R})$ and $\mathfrak{sl}_n(\mathbb{C})$ are simple?
89659
$H_1 ,H_2 \unlhd \, G$ with $H_1 \cap H_2 = \{1_G\} $. Prove every two elements in $H_1, H_2$ commute
95686
$Lie(G \times H)\cong Lie(G)\oplus Lie(H)$
145809
Automorphism group of a lie algebra as a lie subgroup of $GL(\frak g)$
14895
Reference for the subgroup structure of $\rm{PSL}_2(q)$
138297
Let $G = GL_2\mathbb (R)$. Show that $T$ is a subgroup of $G$
51898
Show that $\operatorname{Hom}_{R} (R,M) \cong M$
144582
Index of a subgroup in $SL_2(\mathbb{Z})$
53266
Show that $R/I\otimes_R R/J\cong R/(I+J)$
63478
Is $\mathbb{Q}(\sqrt{2}) \cong \mathbb{Q}(\sqrt{3})$?
27670
Group homomorphisms $\mathbb{Q}\to\mathbb{R}$
94296
Classifying the factor group $(\mathbb{Z} \times \mathbb{Z})/\langle (2, 2) \rangle$
33338
Problem on $\operatorname{Hom}(\mathbb Z_6,R^*\oplus C^*)$
109596
Isomorphism from $\mathrm{Aut}(\mathbb{Z}/2\mathbb{Z}\times \mathbb{Z}/2\mathbb{Z})$ to $S_3$