For what values of $x_1, x_2, x_3, x_4$ is the matrix $A$ is invertible?
68055
Why are Vandermonde matrices invertible?
80134
Maximum and minimum value of Determinant of $3 \times 3$ Matrix with entries $\pm 1$
47589
Product of a primitive matrix and its transpose.
42809
How can we show that $(I-A)$ is invertible?
113518
Determinant of the inverse matrix
132879
Matlab questions about $a_{n+1} = 4a_{n} + n +1$
145980
For every matrix $A\in M_{2}( \mathbb{C}) $ there's  $X\in M_{2}( \mathbb{C})$ such that $X^2=A$?
65305
Minimal polynomial for an invertible matrix and its determinant
71631
About idempotent and invertible matrix
5981
For which values of $a$ does $a-2 \mid a^3+4$
97781
invertible matrices connected or not
75215
Properties of invertible matrices
25682
If $A$ is an $m\times n$ matrix, $B$ is an $n\times m$ matrix and $n<m$, then $AB$ is not invertible.
124942
Prove that an upper triangular matrix is invertible if and only if every diagonal entry is non-zero.
139201
Finding Jordan basis of a matrix $(4\times 4)$
14161
Proof of when is $A=X^TX$ invertible?
4517
Showing a $2\times2$ matrix is invertible