Mutual diagonal basis iff ST=TS
36613
Prove that simultaneously diagonalizable matrices commute
127025
Diagonalization of a projection
34820
Transpose Operator is diagonalizable?
134243
Minpoly and Charpoly of block diagonal matrix
35247
The characteristic and minimal polynomial of a companion matrix
46308
Simultaneous diagonlisation of two quadratic forms, one of which is positive definite
89047
If a matrix is triangular, is there a quicker way to tell if it is can be diagonalized?
18470
A practical way to check if a matrix is positive-definite
127882
Proofs involving orthonormal basis
6960
Necessary and sufficient condition for the matrix $A = I - 2 x x^t$ to be orthogonal
156565
Find a matrix that simultaneously diagonalizes to matrices
5506
Perturbation property of Orthonormal basis for Hilbert space
25335
Orthogonal matrix over cross product
116908
Basis for set of nxn matrices with trace = 0
87451
Construction of matrices under ZFC axioms
52118
Where we have used the condition that $ST=TS$, i.e, commutativity?
83475
Prove Or Disprove: tr(AB)=tr(A)*tr(B)