On Separation, Comparison and Oscillation Theorems for Self-Adjoint Systems of Linear Second Order Differential Equations

1931 ◽  
Vol 53 (4) ◽  
pp. 781 ◽  
Author(s):  
G. A. Bliss ◽  
I. J. Schoenberg





2004 ◽  
Vol 11 (1) ◽  
pp. 7-26
Author(s):  
Ravi P. Agarwal ◽  
Said R. Grace ◽  
Donal O'Regan

Abstract We establish some new oscillation criteria for higher order nonlinear differential equations. The main idea involves comparing our equation with the related linear second order differential equations so that the known oscillation theorems from the literature can be employed directly.



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