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Periodic solutions of Liénard equations
1984The paper deals with the existence of p-periodic solutions \((p>0)\) for the Liénard differential system in \({\mathbb{R}}^ m\) (1) \(x''(t)+(d/dt)\phi (x(t))+Ag(x(t))=h(t)\) (t\(\in {\mathbb{R}})\), where \(\phi\) : \({\mathbb{R}}^ m\to {\mathbb{R}}^ m\) is a \(C^ 1\)-map, \(g: {\mathbb{R}}^ m\to {\mathbb{R}}^ m\) is continuous, A is an \(m\times m ...
OMARI, PIERPAOLO, ZANOLIN F.
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Existence of periodic solutions and almost periodic solutions
1991Yoshiyuki Hino +2 more
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