Mathematics
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user8675309
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View all questions and answers
All Questions Answers
Score Newest
answer
11
How to prove that every orthogonal matrix has determinant $\pm1$ using limits (Strang 5.1.8)?
Mar 31, 2020
answer
9
Determinant of $A+A^T$ is an odd integer if $\text{det}(A-A^T)=1$.
Sep 29, 2022
answer
8
Fuglede's theorem in finite-dimensional vector space
Apr 6, 2020
answer
7
Is any symmetric matrix of which its diagonalvector equals its eigenvalues a diagonal matrix?
Aug 30, 2022
answer
7
How to maximize $\det(W^*DW)$, where $D$ is real diagonal?
Jul 6, 2022
answer
7
How is the rank of a matrix affected by centering the columns of a matrix?
Jun 16, 2020
answer
7
$A$ is positive semidefinite $\iff \text{det} (B_K) \geq 0$
May 22, 2021
answer
6
Construction of QR decomposition for a singular matrix
Nov 3, 2020
answer
5
commutes with a nilpotent matrix and invertible
Nov 30, 2020
answer
5
Is $I-JR$ invertible if $J$ is skew-symmetric and $R$ is symmetric positive semi-definite?
Jul 3, 2022

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