Show that upper triangular matrices group is solvable
130298
Why is the group of unit upper triangular matrices solvable?
73155
Prove that for any square matrix, an invertible matrix B exists, so that BA is triangular
125960
Factor groups of matrices
68128
Two term free resolution of an abelian group.
88726
Problem about solvable groups
28108
Proving the kernel is a normal subgroup.
88221
Find the center of the group $\operatorname{GL}(n,\mathbb R)$ of invertible $n \times n$ matrices.
26801
Show that orthogonal matrices are diagonalizable
103148
Show Galois group of $f(t) = t^5 - 3$ over $\mathbb Q$ is solvable
108012
A matrix $M$ that commutes with any matrix is of the form $M=\alpha I$
153250
Finding the derived group
74452
On a uniqueness proof for solutions of $\ a + x = b\,$ in a group
151240
Short way for upper triangularization
150854
Identifying a quotient group (NBHM-$2014$)
15202
the root of $N$th transpose matrix
89047
If a matrix is triangular, is there a quicker way to tell if it is can be diagonalized?
115905
The determinant of block triangular matrix as product of determinants of diagonal blocks