On the crossing of extremals at focal points
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Publication:5845801
DOI10.1090/S0002-9904-1943-07960-8zbMath0063.06748OpenAlexW1971590346MaRDI QIDQ5845801
Publication date: 1943
Published in: Bulletin of the American Mathematical Society (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1090/s0002-9904-1943-07960-8
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