On real eigenvalues of complex matrices
On real eigenvalues of complex matrices
We define the inertia of a complex matrix A to be In A = (π(A), v(A), δ(A)), where π(A), v(A), 3 (A) are respectively the number of eigenvalues of A with positive, negative, and zero real parts.We shall always let G, H and K represent Hermitian matrices; we denote the …