query: Why these two matrices commute?
positive_passages.docid: 25430
positive_passages.text: When is matrix multiplication commutative?
negative_passages.docid: 151443
negative_passages.text: Find two $2 \times 2$ matrices $A$ and $B$ with the same rank, determinant,...but they are not similar.
negative_passages.docid: 59125
negative_passages.text: Why does this matrix give the derivative of a function?
negative_passages.docid: 29688
negative_passages.text: Why are scattering matrices unitary?
negative_passages.docid: 15417
negative_passages.text: Tricky problem on skew-symmetric matrices
negative_passages.docid: 111769
negative_passages.text: Why is inverse of orthogonal matrix is its transpose?
negative_passages.docid: 108012
negative_passages.text: A matrix $M$ that commutes with any matrix is of the form $M=\alpha I$
negative_passages.docid: 65628
negative_passages.text: what happens to rank of matrices when singular matrix multiply by non-singular matrix??
negative_passages.docid: 126990
negative_passages.text: Invertible matrix and inverse matrix
negative_passages.docid: 123044
negative_passages.text: Commutative matrices are multiples of the identity
negative_passages.docid: 59202
negative_passages.text: What is the angle between those two matrices over $\mathbb{C}$?
negative_passages.docid: 150387
negative_passages.text: Questions about matrix rank, trace, and invertibility
negative_passages.docid: 133482
negative_passages.text: $AB-BA$ is a nilpotent matrix if it commutes with $A$
negative_passages.docid: 56312
negative_passages.text: Why can this product of rectangular matrices not be the identity matrix?
negative_passages.docid: 97781
negative_passages.text: invertible matrices connected or not
negative_passages.docid: 155275
negative_passages.text: If two real matrices are conjugated over $\mathbb{C}$, are they then also conjugated over $\mathbb{R}$?
negative_passages.docid: 21571
negative_passages.text: Why are real symmetric matrices diagonalizable?