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zbMath0987.34037MaRDI QIDQ2721847

Chengwen Wang

Publication date: 11 July 2001

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

existence periodic solutions Leray-Schauder continuation theorem Duffing equation lower solution upper solution

Mathematics Subject Classification ID

Periodic solutions to ordinary differential equations (34C25) Applications of operator theory to differential and integral equations (47N20)

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