Description: By employing a generalized Riccati technique and an integral averaging
technique, some new oscillation criteria are established for the second
order matrix differential system U′ = A(t)U+ B(t)V V ′ = C(t)U A∗ (t)V
where A(t) B(t) C(t) are (n n)-matrices, and B C are Hermitian. These
results are sharper than some previous results.
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