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Oscillatory properties of first order linear functional differential equations. (English) Zbl 0553.34045

Oscillatory properties of retarded and advanced functional differential equations are investigated. In the first part, the study concerns equations with piecewise constant arguments, which found applications in certain biomedical problems. Then, results of some authors are generalized for general equations with many argument deviations. Finally, applications are given to equations with linear transformations of the argument.

MSC:

34K99 Functional-differential equations (including equations with delayed, advanced or state-dependent argument)
34K10 Boundary value problems for functional-differential equations
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