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F. Klein mentions a certain Blumenthal in his famous book on the history of mathematics in 19th century with the following verse(when he was talking about the curvature in space):

Die Menschen fassen kaum es

Das Krümmungsmaß des Raumes

Question: I am wondering whom this Blumenthal Klein referred to. Is he Otto Blumenthal or somebody else?

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  • $\begingroup$ google books alleges that some article in Nova Acta Leopoldina in 1987 says it was Otto Blumenthal, but it is paywalled away from me. $\endgroup$ – kimchi lover Jul 19 '20 at 11:51
  • $\begingroup$ Thank you. I do find a paper of Howard Stein, attributing the verse to Otto Blumenthal, but I wonder what is his information source.... $\endgroup$ – zy_ Jul 19 '20 at 13:09
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    $\begingroup$ strangebeautiful.com/other-texts/… $\endgroup$ – zy_ Jul 19 '20 at 13:10
  • $\begingroup$ Butzer and Volkmann's 2006 paper about Blumenthal cites 3 obits. The one by Sommerfeld looks like it might have this detail, (A. Sommerfeld, F. Krauss, Otto Blumenthal zum Gedächtnis, Jahrbuch der RWTH Aachen 4 (1951) 21–25) but it's in a journal that does not seem to be on-line. $\endgroup$ – kimchi lover Jul 19 '20 at 14:19
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    $\begingroup$ @AlexandreEremenko I think you misread the OP's slightly awkwardly phrased question. The famous book is Klein's Verlesungen of 1926, which, on page 153 (I think) quotes Blumenthal's verse "Die Menschen..." Blumenthal is not claimed to have written a history of mathematics. $\endgroup$ – kimchi lover Jul 19 '20 at 15:49

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