Florian Cajori
Florian Cajori atColorado College
Born	(1859-02-28)28 February 1859 St. Aignan nearThusis,[1]Graubünden,Switzerland
Died	14 August 1930(1930-08-14) (aged 71) Berkeley,United States
Scientific career
Fields	History of mathematics

Florian Cajori (February 28, 1859 – August 14^[1][2] or 15,^[3] 1930) was a Swiss-Americanhistorian of mathematics.

Florian Cajori was born inZillis,Switzerland, as the son of Georg Cajori and Catherine Camenisch. He attended schools first in Zillis and later inChur. In 1875, Florian Cajori emigrated to the United States at the age of sixteen, and attended theState Normal school inWhitewater, Wisconsin. After graduating in 1878, he taught in a country school, and later began studyingmathematics atUniversity of Wisconsin–Madison.^[4]

In 1883, Cajori received both his bachelor's and master's degrees from the University of Wisconsin–Madison, briefly attended Johns Hopkins University for 8 months in between degrees.^[5] He taught for a few years atTulane University, before being appointed as professor of applied mathematics there in 1887. He was then driven north by tuberculosis. He founded the Colorado College Scientific Society and taught atColorado College where he held the chair in physics from 1889 to 1898 and the chair in mathematics from 1898 to 1918. He was the position Dean of the engineering department.^[6] While at Colorado, he received his doctorate from Tulane in 1894, and married Elizabeth G. Edwards in 1890 and had one son.^[4]

Cajori'sA History of Mathematics (1894) was the first popular presentation of the history of mathematics in the United States.^[4] Based upon his reputation in the history of mathematics (even today his 1928–1929History of Mathematical Notations has been described as "unsurpassed")^[7] he was appointed in 1918 to the first history of mathematics chair in the U.S, created especially for him, at theUniversity of California, Berkeley. He remained in Berkeley, California until his death in 1930. Cajori did no original mathematical research unrelated to the history of mathematics.^[4] In addition to his numerous books, he also contributed highly recognized and popular historical articles to theAmerican Mathematical Monthly.^[6] His last work was a revision of Andrew Motte's 1729 translation of Newton'sPrincipia, vol.1 The Motion of Bodies, but he died before it was completed. The work was finished by R.T. Crawford of Berkeley, California.

• 1917–1918,Mathematical Association of America president
• 1923, American Association for the Advancement of Science vice-president
• 1924, Invited Speaker of theInternational Congress of Mathematicians in 1924 in Toronto^[8][9]
• 1924–1925,History of Science Society vice-president
• 1929–1930, Comité International d'Histoire des Sciences vice-president
• TheCajori crater on the Moon was named in his honour

• 1890:The Teaching and History of Mathematics in the United States U.S. Government Printing Office.
• 1893:A History of Mathematics, Macmillan & Company.^[10]
• 1898:A History of Elementary Mathematics, Macmillan.
• 1899:A History of Physics in its Elementary Branches: Including the Evolution of Physical Laboratories, The Macmillan Company, 1899.
  • A History of Physics in its Elementary Branches: Including the Evolution of Physical Laboratories, The Macmillan Company, 1917.
  • Storia della fisica elementare con l'evoluzione dei laboratori fisici (in Italian). Bologna: Nicola Zanichelli. 1909.
• 1909:A History of the Logarithmic Slide Rule and Allied Instruments The Engineering News Publishing Company.
• 1916:William Oughtred: a Great Seventeenth-century Teacher of Mathematics The Open Court Publishing Company
• 1919:A History of the Conceptions of Limits and Fluxions in Great Britain, from Newton to Woodhouse,Open Court Publishing Company.^[11]
• 1920:On the History of Gunter's Scale and the Slide Rule during the Seventeenth Century Vol. 1,University of California Press.
• 1928:A History of Mathematical Notations The Open Court Company.
• 1934:Sir Isaac Newton's Mathematical Principles of Natural Philosophy and His System of the World tr. Andrew Motte, rev. Florian Cajori. Berkeley: University of California Press.^[12]

• 1913: "History of the Exponential and Logarithmic Concepts",American Mathematical Monthly 20:
  • Page 5 From Napier to Leibniz and John Bernoulli I, 1614 — 1712
  • Page 35 The Modern Exponential Notation (continued)
  • Page 75 : The Creation of a Theory of Logarithms of Complex Numbers by Euler, 1747 — 1749
  • Page 107 : From Euler to Wessel and Argand, 1749 — 1800, Barren discussion.
  • Page 148: Generalizations and refinements effected during the nineteenth century : Graphic representation
  • Page 173: Generalizations and refinements effected during the nineteenth century (2)
  • Page 205: Generalizations and refinements effected during the nineteenth century (3)

These seven installments of the article are available through the Early Content program ofJstor.

• 1923: "The History of Notations of the Calculus."Annals of Mathematics, 2nd Ser., Vol. 25, No. 1, pp. 1–46

• Works by Florian Cajori atProject Gutenberg
• Works by Florian Cajori atFaded Page (Canada)
• Works by or about Florian Cajori at theInternet Archive
• Works by Florian Cajori atLibriVox (public domain audiobooks)
• O'Connor, John J.;Robertson, Edmund F.,"Florian Cajori",MacTutor History of Mathematics Archive,University of St Andrews
• Florian Cajori at theMathematics Genealogy Project
• Florian Cajori (2010).A History of the Conceptions of Limits and Fluxions in Great Britain, from Newton to Woodhouse. BiblioBazaar.ISBN 978-1-143-05698-7.

• 1859 births
• 1930 deaths
• 19th-century American mathematicians
• 20th-century American mathematicians
• Tulane University alumni
• Swiss emigrants to the United States
• American historians of mathematics
• Presidents of the Mathematical Association of America

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• Articles with Project Gutenberg links
• Articles with Internet Archive links
• Articles with LibriVox links