Prove a certain "property" of matrix multiplication
8638
If I know $AB$, how can I calculate $BA$?
41813
How to prove positive (semi-)definitness in matrix notation without numbers
36613
Prove that simultaneously diagonalizable matrices commute
80751
diagonalisability of matrix few properties
70606
Show that the LU decomposition of matrices of the form $\left[\begin{smallmatrix}0& x\\0 & y\end{smallmatrix}\right]$ is not unique
39746
How to prove that given set is a connected subset of the space of matrices?
142640
Prove determinant of a matrix $=\prod_{j<i}(a_i-a_j)$
102935
Trace and determinant of composition of a left-multiplication and a right-multiplication on a space of matrices
34043
A rank-one matrix is the product of two vectors
88746
Positive definiteness of the matrix $A+B$
13723
Doubly stochastic matrix proof
153506
Proving the inverse of a matrix equals $I_n-\frac{1}{n-1}A$
75066
If the product of two square matrices is invertible, then both matrices are invertible
69980
Proving that if $A$ is an $n\times n$ orthogonal matrix, then $\det(A) = \pm1$
31631
Proof Verification: Joint variance of the product of a random matrix with a random vector
158845
Given $A$ and $B$ positive-definite matrices and $Q$ unitary matrix, prove that if $A = BQ$, then $A=B$.
130498
Linear algebra proof regarding matrices