New Kamenev type theorems for second-order linear matrix differential systems Original Research Article

Some new Kamenev type oscillation criteria are established for the second-order matrix differential system (P(t)Y′)′ + Q(t)Y = 0, where Y, P, and Q are n × n real continuous matrix functions with P(t), Q(t) symmetric and P(t) > 0 for t ε t0, ∞). Our results are sharper than some previous results, and can be applied to the cases which are not covered by known criteria.