A problem in matrices
3301
If $AB = I$ then $BA = I$
149629
The Eigenvalues of a block matrix
33591
Product of two matrices sharing the same eigenvector
5616
How can I prove the IFF condition for this group of matrices?
43570
Finding two non-zero matrices where $AX = BA$
109217
Invertibility of the Product of Two Matrices
3330
Square matrices, ABA = A?
113169
Number of $\pm 1$ matrices whose determinant is negative or zero
44898
Help with commutative property of matrices problem
24454
The relationship between the eigenvalues of matrices $XY$ and $YX$
132827
Linear programming, Help!
8926
A problem regarding to Schur's lemma
139496
Linear systems. Please help me solve this
97781
invertible matrices connected or not
100656
$2\times2$ matrix $A$ such that $A$ has one independent eigenvector while $A^{2}$ has two independent eigenvectors
98631
Postive-semidefiniteness of matrix with entries $1/(a_i+a_j)$
26343
Number of certain (0,1)-matrices, Stanley's Enumerative Combinatorics