How to determine the characteristic polynomial of the $4\times4$ real matrix of ones?
517
Determinant of a specially structured matrix ($a$'s on the diagonal, all other entries equal to $b$)
57027
Determinant of this skew symmetric matrix
84400
Build a Companion Matrix of a Polynomial?
142097
Finding the dimension of the orthogonal complement
44898
Help with commutative property of matrices problem
71572
factor-square property (FSP) of polynomials
55119
Proof that the coefficients of a polynomial are real
52083
Vandermonde determinant for order 4
134442
Can a matrix in $\mathbb{R}$ have a minimal polynomial that has coefficients in $\mathbb{C}$?
129743
$A$ be a $2\times 2$ real matrix with trace $2$ and determinant $-3$
14111
Determining possible minimal polynomials for a rank one linear operator
65661
Decomposition of a homogeneous polynomial
11566
Similar matrices and minimal polynomial
57318
Property of the conjugate transpose matrix with inner product
110200
Determinant of a Special Symmetric Matrix
17391
Diagonalisation and characteristic polynomial
13442
Find three real orthogonal matrices of order $3$ having all integer entries.