ON THE RESONANT OSCILLATION OF CERTAIN FOURTH ORDER NONLINEAR DIFFERENTIAL EQUATIONS WITH DELAY
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acadpubl.eu
Abstract
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We prove the existence of periodic solutions for the periodic boundary
value problem (1.1) under some resonant conditions on the asymptotic behaviour
of
g(t, y)
ay
for |y| → ∞.
The uniqueness of periodic solutions is also examined
Keywords
QA Mathematics