An example of a smooth linear partial differential equation without solution
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Publication:768921
DOI10.2307/1970121zbMath0078.08104OpenAlexW4241838442WikidataQ56091657 ScholiaQ56091657MaRDI QIDQ768921
Publication date: 1958
Published in: Annals of Mathematics. Second Series (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.2307/1970121
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