invertible matrix and polynomials
58491
Proving the inverse of a matrix as a polynomial of matrices
18585
Showing $A-I$ is invertible, when $A$ is a skew-symmetric matrix
148946
If $\mathbf{A}$ is a $2\times 2$ matrix that satisfies $\mathbf{A}^2 - 4\mathbf{A} - 7\mathbf{I} = \mathbf{0}$, then $\mathbf{A}$ is invertible
4517
Showing a $2\times2$ matrix is invertible
94378
Is Linear transformations $T_1,T_2 : \mathbb{R}^n\rightarrow \mathbb{R}^n$ Invertible?
98273
minimal polynomial of powers of a matrix
71631
About idempotent and invertible matrix
19846
Gram matrix invertible iff set of vectors linearly independent
42809
How can we show that $(I-A)$ is invertible?
85845
Matrix with zeros on diagonal and ones in other places is invertible
82925
Let the matrix $A=[a_{ij}]_{n×n}$ be defined by $a_{ij}=\gcd(i,j )$. How prove that $A$ is invertible, and compute $\det(A)$?
124942
Prove that an upper triangular matrix is invertible if and only if every diagonal entry is non-zero.
114271
Why is a matrix invertible if it can be written as the product of elementary matrices?
6398
Can the product of an $4\times 3$ matrix and a $3\times 4$ matrix be invertible?
35247
The characteristic and minimal polynomial of a companion matrix
52040
"Inverse" of an $n\times k$ matrix.
30882
Proving Invertibility and Eigenvalues