Konrad Knopp

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Konrad Hermann Theodor Knopp (22 July 1882 – 20 April 1957) was a German

Family and education

Knopp was born in 1882 in

Knopp traveled widely in Asia, taking teaching jobs in Nagasaki, Japan (1908-9), at the commercial college, and in Qingdao, China (1910–11), at the German-Chinese college there, and spending some time in India and China following his stay in Japan. His wedding to Kressner, the daughter of Colonel Karl Kressner and Hedwig Rebling, took place in Germany between these periods. After Qingdao he returned to Germany for good and taught at military academies while writing his habilitation thesis for Berlin University.

During the

• Knopp, Konrad (1916). "Bemerkungen zur Struktur einer linearen perfekten nirgends dichten Punktmenge". Math. Ann. (in German). 77 (3): 438–451.
  S2CID 121685956
  .
• Knopp, Konrad (1918). "Ein einfaches Verfahren zur Bildüng stetiger nirgends differenzierbarer Funktionen". Math. Z. (in German). 2 (1–2): 1–26.
  S2CID 121100303
  .
• Knopp, Konrad (1920). "Mittelwertbildung und Reihentransformation". Math. Z. (in German). 6 (1–2): 118–123.
  S2CID 120094567
  .
• Knopp, Konrad (1923). "Über das Eulersche Summierungsverfahren". Math. Z. (in German). 18 (1): 125–156.
  S2CID 124268769
  .
• Knopp, Konrad (1930). "Zur Theorie der Limitierungsverfahren". Math. Z. (in German). 31 (1): 97–172, 276–305.
  S2CID 124089817
  .
• Knopp, Konrad (1935). "Über die maximalen Abstände und Verhältnisse verschiedener Mittelwerte". Math. Z. (in German). 39 (1): 768–776.
  S2CID 120268376
  .

In 1918, Knopp was one of the co-founders of the journal Mathematische Zeitschrift (in which the majority of his above-cited articles are published). He was the editor of the journal from 1934 to 1952.

After retirement Knopp continued to do mathematics, publishing for example

• Knopp, Konrad (1952). "Zwei Abelsche Sätze". Acad. Serbe Sci. Publ. Inst. Math. 4: 89–94.

and delivering the lecture Folgenräume und Limitierungsverfahren at the first meeting of the International Mathematics Union in 1952.

Books

Knopp's mathematical research was on "generalized limits" and he wrote two books on sequences and series:

• Knopp, Konrad (1956). Infinite Sequences and Series. Dover Publications.
  ISBN 978-0-486-60153-3
  .
• Knopp, Konrad (1990). Theory and Application of Infinite Series. Dover Publications.
  ISBN 978-0-486-66165-0
  .

• Knopp, Konrad (1996). Theory of Functions. Dover Publications.
  ISBN 978-0-486-69219-7
  .
• Knopp, Konrad (1952). Elements of the Theory of Functions. Dover Publications.
  ISBN 978-0-486-60154-0
  .
• Knopp, Konrad (2000). Problem Book in the Theory of Functions. Dover Publications.
  ISBN 978-0-486-41451-5
  .

• von Mangoldt, Hans (1990). Höhere Mathematik: eine Einführung für Studierende und zum Selbststudium. ed. Konrad Knopp (6th ed.) (17th ed.). Stuttgart: S. Hirzel Verlag.
  ISBN 978-3-7776-0463-3
  .

• Osgood curve
• Riemann zeta function

References

The following works were used as sources for the MacTutor biography on which this article was originally based:

• Freudenthal, Hans (1970–1990). "Biography of Konrad Knopp". Dictionary of Scientific Biography. New York.{{cite book}}: CS1 maint: location missing publisher (link)
• Anonymous (1957). "Obituary: Konrad Knopp". Math. Z. 67 (1): v.
  S2CID 186224692
  .
• Kamke, E.; K. Zeller (1958). "Konrad Knopp". Jahresbericht der Deutschen Mathematiker-Vereinigung. 60: 44–49.
• Kamke, E.; K. Zeller (1957). "Obituary: Konrad Knopp". Jahresbericht der Deutschen Mathematiker-Vereinigung. 60: 43–49.
• Knopp, Konrad; K.-Bühler, W. (1985). "Mathematics as a cultural activity". Math. Intelligencer. 7 (1): 7–14, 26.
  S2CID 122784305
  .
• Löbell, F. (1958). "Obituary: Konrad Knopp". Jahrbuch der Bayerischen Akademie der Wissenschaften München: 187–189.

• O'Connor, John J.; Robertson, Edmund F., "Konrad Knopp", MacTutor History of Mathematics Archive, University of St Andrews
• Konrad Knopp at the Mathematics Genealogy Project