Oscillation criteria of Yan type for linear Hamiltonian systems
New oscillation criteria of Yan type are established for the linear Hamiltonian system X' = A(t)X + B(t)Y, t greater than or equal to t(0), Y' = C(t)X - A*(t)Y, where A(t), B(t), and C(t) are continuous n x n-matrix valued functions with B*(t) = B(t) > 0, C*(t) = C(t). The criteria obtained generalize and improve some previous results for the second-order linear matrix differential systems in literature. (C) 2003 Elsevier Ltd. All rights reserved.
oscillation hamiltonian system yan type criterion