scholarly journals Oscillation theorems for damped elliptic differential equations of second order

2008 ◽  
Vol 38 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Zhiting Xu
SpringerPlus ◽  
2014 ◽  
Vol 3 (1) ◽  
Author(s):  
Ambarka A Salhin ◽  
Ummul Khair Salma Din ◽  
Rokiah Rozita Ahmad ◽  
Mohd Salmi Md Noorani

Author(s):  
S. R. Grace ◽  
B. S. Lalli

New oscillation criteria for the oscillatory behaviour of the differential(a(t)x·(t)) ·+p(t)x·(t)+q(t)f(x[g(t)])=0                ,( · =ddt)and(a(t)ψ(x(t))x·(t)) ·+p(t)x·(t)+q(t)f(x[g(t)])=0,are established


1993 ◽  
pp. 349-371
Author(s):  
Masaya Yamaguti ◽  
Louis Nirenberg ◽  
Sigeru Mizohata ◽  
Yasutaka Sibuya

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