No. of distinct matrices satisfying a certain equation
48127
Are there infinitely many $A\in \mathbb{C}^{2 \times 2}$ satisfying $A^3 = A$?
55787
Is there any matrix $2\times 2$ such that $A\neq I$ but $ A^3=I$?
35080
If matrices $A$ and $B$ commute, $A$ with distinct eigenvalues, then $B$ is a polynomial in $A$
66842
Number of $n^2\times n^2$ permutation matrices with a 1 in each $n\times n$ subgrid
103665
Product of matrices of different order is not invertible
129345
Name for matrices with orthogonal (not necessarily orthonormal) rows
31326
Number of $(0,1)$ $m\times n$ matrices with no empty rows or columns
110484
Condition on a matrix so that its determinant is $2$
156438
Find a matrix equation equivalent to $A^TPA+P=I$
70157
Is every matrix $A$ such that $A^k=I$ diagonalizable?
156989
Proof that Hadamard matrices of order $4k+2$ don't exist
128990
Prove that, at least one of the matrices $A+B$ and $A-B$ has to be singular
34759
Name of a special matrix
30866
Relation between rank and number of distinct eigenvalues of a matrix
39353
Matrices that can only be permutation matrices
58021
Finding matrix $B$ is not zero matrix where $AB= 0$
98273
minimal polynomial of powers of a matrix