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词条 Joseph Knar
释义

  1. Life

  2. Knar's Formula

  3. Publications

  4. References

{{short description|Austrian mathematician}}

Joseph Knar (January 1, 1800 – June 1, 1864) was an Austrian mathematician working at the University of Graz.[1] He is most well known for discovering Knar's formula, an infinite product formula involving the gamma function.

Life

From a poor family, Knar graduated from the University of Graz at the age of 19 after studying mathematics and law. In 1821, he became a full professor, a position which he held until his death from a stroke in 1864. He published several books including a two-volume textbook Lehrbuch der Elementarmathematik on elementary mathematics.

Knar's Formula

{{main|Knar's formula}}

Knar's most famous mathematical contribution was his discovery of the infinite product formula

for .[2]

Publications

  • Neues, sehr einfaches Verfahren zur Ausziehung der Wurzeln aus bestimmten Zahlen (1824)
  • Lehrbuch der Elementarmathematik, 2 volumes (1828–1829)
  • Theorie der harmonischen Reihen in Archiv der Mathematik und Physik (1864)

References

1. ^S. Gunther, Joseph Knar, Allgemeine Deutsche Biographie 16 (1882) 269.
2. ^J. Knar, Die harmonischen reihen, Archiv der Mathematik und Physik 41–42 (1864) p. 360
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8 : 1800 births|1864 deaths|Austrian mathematicians|University of Graz alumni|University of Graz faculty|Place of birth missing|Place of death missing|Textbook writers
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