Necessary and sufficient conditions for
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Aimin Zhao; Jurang Yan
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Article
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1997
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Elsevier Science
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English
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In this paper, a necessary and sufficient condition for oscillation of a first-order delay differential equation with impulses x'(t) + 3-:~ p~x (t -rd = 0, t # t~, i=1 x(t+)-x(tk) =bk~(t~), k = 1,2 ....