Strange answer for Eigenvalues of a 4x4 matrix
4241
How do I work with Root objects?
19132
Similar matrices have the same eigenvalues with the same geometric multiplicity
56312
Why can this product of rectangular matrices not be the identity matrix?
81070
Why must the eigenvalue of the number operator be an integer?
95717
Same eigenvalues, but not similar
110271
Given a matrix with non-negative real entries, can you algebraically prove that it has a non-negative eigenvalue?
53993
Can Eigenvalues[] and Eigenvectors[] be assumed to return the same ordering?
56727
Odd-dimensional complex skew-symmetric matrix has eigenvalue $0$
154667
Singular values of the data matrix and eigenvalues of the covariance matrix
153392
Let $A$ be a $n\times n$ matrix such that $a_{ij}=ij$,find the eigenvalues of the matrix $A$.
145396
Symmetric Matrix , Eigenvectors are not orthogonal to the same eigenvalue.
106024
The eigenvalues and corresponding eigenvectors for the matrix
146293
Calculating the eigenvalues of a matrix
70455
Why are all nonzero eigenvalues of the skew-symmetric real matrices pure imaginary?
56083
Find the eigenvalues of a projection operator
102152
Eigensystem, Eigenvalue doesn't output nonreal eigenvalues
90064
What does it mean when Mathematica returns a zero "eigenvector"?