Show map is norm-preserving and determine Eigenvalues
62590
Show norm preserving property and determine Eigenvalues
84535
The spectral radius of normal operator
29788
Eigenvalues of a matrix whose square equals its transpose
112231
Showing that a one-to-one linear transformation maps a linearly independent set onto a linearly independent set
16692
a representation condition of Hilbert space
149923
eigenvalues of A - aI in terms of eigenvalues of A
104148
Showing the norm' is non-negative
106288
Prove that the eigenvalues of a block matrix are the combined eigenvalues of its blocks
88712
Determining a matrix from its characteristic polynomial
83970
Proof of an elementary property of Projection Operators
4509
Proof that an involutory matrix has eigenvalues 1,-1
98759
Proof of "Dual normed vector space is complete"
11558
How to show that the limit of compact operators in the operator norm topology is compact
7457
Prove that $J^+AJ$ has positive eigenvalues
64463
Proof that angle-preserving map is conformal
115467
Eigenvalues of Householder matrix
81229
Show that $(C([a,b]),\|{\cdot}\|_2)$ is not a complete normed vector space