Finding the Rank of the matrix
11895
If $AB=0$ prove that $\mathrm{rank}(A)+\mathrm{rank}(B)\leq n$
116824
Find the sum of two elements in a matrix
94424
Matrices and Eigenvalues of Norm
119100
How to find the matrix of a quadratic form?
39585
Connection between rank and matrix product
34043
A rank-one matrix is the product of two vectors
44927
Finding rank-nullity of a given matices
1194
Finding the index of an item in a list
21758
Rank of the $n \times n$ matrix with ones on the main diagonal and $a$ off the main diagonal
121800
Find the determinant of $N \times N$ matrix
64741
The square root of positive definite matrix
14472
Creation of a matrix
59973
Eigenvalues and power of a matrix
121157
Proof verification: column rank = row rank
6905
Rank of product of a matrix and its transpose
59030
Finding the dimension of a given vector space
94639
Proof that the rank of a skew-symmetric matrix is at least $2$