Invariant subspace of a diagonal matrix
59055
Diagonalizable transformation restricted to an invariant subspace is diagonalizable
36613
Prove that simultaneously diagonalizable matrices commute
898
Strictly diagonally dominant matrices are non singular
12213
Similarity of real matrices over $\mathbb{C}$
2271
Determinant of a rank $1$ update of a scalar matrix, or characteristic polynomial of a rank $1$ matrix
70021
Verify if symmetric matrices form a subspace
70157
Is every matrix $A$ such that $A^k=I$ diagonalizable?
123665
A question in Subspaces in linear algebra
53261
Show that Pn is an (n+1)-dimensional subspace
35625
Direct sum of orthogonal subspaces
111911
Dimensions of symmetric and skew-symmetric matrices
38945
On the proof that the product of diagonal matrices is a diagonal matrix?
138025
How to show the solution of $\dot{x} = Ax $ is an invariant subspace?
117175
Proof that the 2-norm of orthogonal transformation of a matrix is invariant
75215
Properties of invertible matrices
109471
The eigenvectors of the transpose operator
90576
Symmetric matrix eigenvalues