Comparison theorems for second-order neutral differential equations of mixed type
Three comparison theorems are established for the oscillation of the second-order neutral differential equations of mixed type $$ ig(r(t)[x(t)+p_1(t)x(t-sigma_1)+p_2(t)x(t+sigma_2)]'ig)' +q_1(t)x(t-sigma_3) +q_2(t)x(t+sigma_4)=0. $$ Our results are new even when $p_2(t)=q_2(t)=0$. An...
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| Format: | Article |
| Language: | English |
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Texas State University
2010-11-01
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| Series: | Electronic Journal of Differential Equations |
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| Online Access: | http://ejde.math.txstate.edu/Volumes/2010/167/abstr.html |