What is the real characteristic equation?
117533
$|A-\lambda I|$ and $|\lambda I-A|$
144394
Order 2 elements in finite characteristic field
133646
real analysis -functional equation
33891
If $\mathbf A$ and $\mathbf B$ are Hermitian, when does $\det(\mathbf A-\lambda\mathbf B)=0$ have only real roots?
125569
Prove that the eigenvalues of a real symmetric matrix are real
57811
Properties of the solution of the Ordinary Differential Equation $y' = y(y-1)(y-2)$ as per the Initial conditions?
35278
Does equality of characteristic polynomials guarantee equivalence of matrices?
66481
Convergence of characteristic functions to $1$ on a neighborhood of $0$ and weak convergence
49899
Determine the number of real roots
104037
Jordan normal form for a characteristic polynomial $(x-a)^5$
88712
Determining a matrix from its characteristic polynomial
61477
How do I resolve a recurrence relation when the characteristic equation has fewer roots than terms?
55119
Proof that the coefficients of a polynomial are real
87331
Real polynomial in two variables
14656
The differential equation $xu_{x}+yu_{y}=2u$ satisfying the initial condition $y=xg(x),u=f(x)$
49896
A criterion for independence based on Characteristic function
51644
Differential Equations for Physicists