Finding the radical of $\mathfrak{gl}(2,\mathbb{C})$
37677
Radical of $\mathfrak{gl}_n$
86224
The root system of $sl(3,\mathbb C)$
94296
Classifying the factor group $(\mathbb{Z} \times \mathbb{Z})/\langle (2, 2) \rangle$
20479
Radical of a Lie algebra bracket itself
59041
Centre of $GL_n(\mathbb R)$
48363
Nested Radical of Ramanujan
111291
Galois group of $\mathbb Q(\sqrt{4+\sqrt 7})/\mathbb Q$
111814
Precise connection between complexification of $\mathfrak{su}(2)$, $\mathfrak{so}(1,3)$ and $\mathfrak{sl}(2, \mathbb{C})$
41069
Justifying $\,\Bbb{Z}[i]/\langle 2\rangle\cong \Bbb{Z}[X]/\langle X^2+1,2\rangle\cong \Bbb{F}_2[X]/\langle X^2+1\rangle$
7418
The Center of $\operatorname{GL}(n,k)$
146028
$GL(n, \mathbb{C})$ is isomorphic to a subgroup of $GL(2n, \mathbb{R})$
101229
Lie algebra of $\left(\begin{smallmatrix}a & b\\ & a^2\end{smallmatrix}\right )$ in $GL_2(\mathbb{R})$
11375
Jacobson radical of a certain ring of matrices
622
Galois Group of $\sqrt{2+\sqrt{2}}$ over $\mathbb{Q}$
29269
fundamental group of $GL^{+}_n(\mathbb{R})$
102084
How to show path-connectedness of $GL(n,\mathbb{C})$
13617
Evaluating the nested radical $ \sqrt{1 + 2 \sqrt{1 + 3 \sqrt{1 + \cdots}}} $.