Electronic Journal of Differential Equations,
Vol. 2005(2005), No. 69, pp. 1-6.

Title: Interval oscillation criteria for second order forced nonlinear
       matrix differential equations
       
Authors: Wan-Tong Li (Lanzhou Univ., China)
         Rong-Kun Zhuang (Huizhou Univ., China)

Abstract: 
 New oscillation criteria are established for the nonlinear matrix
 differential equations with a forced term
 $$
 [ r(t)Y'(t)] '+p(t)Y'(t)+Q(t)G( Y'(t)) F( Y(t)) =e(t)I_n.
 $$
 Our results extend and improve the recent results of Li and Agarwal for
 scalar cases. Furthermore, one example that dwell upon the importance of
 our results is included.
  
Submitted  April 20, 2004. Published June 28, 2005.
Math Subject Classifications: 34C10.
Key Words: Interval oscillation; nonlinear matrix differential equation;
           forcing term.