Cardinality of the linear group $GL_n({\mathbb Z}/{p \mathbb Z})$
27865
What is the number of invertible $n\times n$ matrices in $\operatorname{GL}_n(F)$?
78580
Is $SL_n(\mathbb{R})$ a normal subgroup in $GL_n(\mathbb{R})$?
41878
Cardinal of quotient rings of gaussian integers.
133019
Nilpotent elements in $\mathbb Z_n$
89167
Cardinality of equivalence relations in $\mathbb{N}$
19884
The units of $\mathbb Z_4[x]$
14003
$(\mathbb{Z}/2^n \mathbb{Z})^*$ is not cyclic Group for $n\geq 3$
114987
How many connected components does $\mathrm{GL}_n(\mathbb R)$ have?
93169
Show that $(\mathbb Z[x],+)$ and $(\mathbb Q_{>0},\cdot)$ are isomorphic groups
78263
Prove $GL_n(\Bbb{R})/SL_n(\Bbb{R}) \cong \Bbb{R}^\times$
27704
Cardinality of quotient ring $\mathbb{Z_6}[X]/(2X+4)$
62977
Show on $\mathbb{N}$ there are $2^{\aleph_0}$ nonisomorphic linear orders.
11003
Proving that $G/N$ is an abelian group
149578
Subgroups of $(\mathbb Z_n,+)$
146028
$GL(n, \mathbb{C})$ is isomorphic to a subgroup of $GL(2n, \mathbb{R})$
128652
Subgroups of $\mathbb Z \times(\mathbb Z/n\mathbb Z)$
105610
Normalizer of upper triangular group in ${\rm GL}(n,F)$