Monotonicity of the period of a non linear oscillator
classification
🧮 math.CA
physics.class-ph
keywords
monotonicityperioddifferentialequationfunctiongivelinearmiyamoto
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We revisit the problem of monotonicity of the period function for the differential equation $u"-u+u^p=0$ and give a simple proof of recent results of Miyamoto and Yagasaki.
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