Existence of Periodic Solutions for Certain Differential Equations

DOI10.1073/pnas.29.1.29zbMath0061.19002OpenAlexW2077713345WikidataQ33747181 ScholiaQ33747181MaRDI QIDQ5839159

Solomon Lefschetz

Publication date: 1943

Published in: Proceedings of the National Academy of Sciences (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1073/pnas.29.1.29

zbMATH Keywords

ordinary differential equations, difference equations

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