Rank of an adjugate matrix
4205
Is adjoint of singular matrix singular? What would be its rank?
64517
Prove that row rank of a matrix equals column rank
122853
Show that $\operatorname{rank}(A) = \operatorname{rank}(B)$
123151
Find the rank of matrix.
123483
Prove that $\operatorname{rank}(A) + \operatorname{rank}(B) \ge \operatorname{rank}(A + B)$
119435
Rank of the difference of matrices
137093
What is the codimension of matrices of rank $r$ as a manifold?
67058
Prove that $\text{rank}(X^TX)=\text{rank}(X)$
62283
How can I quickly know the rank of this / any other matrix?
18939
Eigenvalues of the transpose
20920
Determinant of a block skew-symmetric matrix
2798
A and B are nxn matrices, $A =B^TB$. Prove that if rank(B)=n, A is pos def, and if rank(B)<b, A is pos semi-def.
65628
what happens to rank of matrices when singular matrix multiply by non-singular matrix??
83049
Frobenius Inequality Rank
45532
Let $A$ be a $n\times n$ matrix with entries $a_{ij}=i+j $ . Calculate rank of $A$
63915
the adjugate of the adjugate
55820
If $A$ is an $n \times n$ matrix and $ A^2 = 0$, then $\text{rank}(A)\le n/2$.