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Birkhoff's problem 20 - MaRDI portal

Birkhoff's problem 20

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DOI10.2307/1969533zbMath0044.19402OpenAlexW2318856940MaRDI QIDQ2649592

B. H. Arnold

Publication date: 1951

Published in: Annals of Mathematics. Second Series (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2307/1969533

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