Abstract
We consider the oscillation of a class of first order neutral differential equations with nine real parameters. This relatively difficult problem is completely solved by applying the Cheng-Lin envelope method to find the exact conditions for the absence of real roots of the associated characteristic function. Several specific examples are also included to illustrate these conditions.
Citation
Shao-Yuan Huang. Sui-Sun Cheng. "Absence of Real Roots of Characteristic Functions of Functional Differential Equations with Nine Real Parameters." Taiwanese J. Math. 15 (1) 395 - 432, 2011. https://doi.org/10.11650/twjm/1500406182
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