The Mathematics Genealogy Project knows about an Eberhard Teufel (one F), Stuttgart, 1979; and about an Elmar Teufl (one F, one E), Graz, 2002. Neither of these can be the one Hans seeks, since "E. Teuffel" was proving things about the Theodorus spiral in 1958. I suggest contacting Kate Long, who seems to have (but not reveal details of) the 1958 reference; her address is Klong@shipleyschool.org. On Wed, Apr 29, 2009 at 3:37 PM, Hans Havermann <pxp@rogers.com> wrote:
Mathematician "E. Teuffel" is mentioned in a number of Google hits. Does anyone here what the "E" stood for? By the way, in a Wikipedia entry on the Spiral of Theodorus, he is called Frage von E. Teuffel, an unfortunate transcription error. :)
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