Johan Frederik Steffensen: Difference between revisions
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'''Johan Frederik Steffensen''' (28 February 1873, in [[Copenhagen]] – 20 December 1961) was a [[Danish people|Danish]] [[mathematician]], [[statistician]], and [[actuary]] who did research in the fields of [[calculus of finite differences]] and [[interpolation]]. He was professor of actuarial science at the University of Copenhagen from 1923 to 1943. [[Steffensen's inequality]] and [[Steffensen's method]] (an iterative numerical method) are named after him. |
'''Johan Frederik Steffensen''' (28 February 1873, in [[Copenhagen]] – 20 December 1961) was a [[Danish people|Danish]] [[mathematician]], [[statistician]], and [[actuary]] who did research in the fields of [[calculus of finite differences]] and [[interpolation]]. He was professor of actuarial science at the University of Copenhagen from 1923 to 1943. [[Steffensen's inequality]] and [[Steffensen's method]] (an iterative numerical method) are named after him. He was an Invited Speaker at the 1912 [[International Congress of Mathematicians]] (ICM) in Cambridge, England at the 1924 ICM in Toronto.<ref>{{cite web|title=Steffensen, J. F.|website=ICM Plenary and Invited Speakers|url=https://www.mathunion.org/icm-plenary-and-invited-speakers?combine=Steffensen}}</ref> |
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==Publications== |
==Publications== |
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Revision as of 16:58, 23 May 2021
Johan Frederik Steffensen (28 February 1873, in Copenhagen – 20 December 1961) was a Danish mathematician, statistician, and actuary who did research in the fields of calculus of finite differences and interpolation. He was professor of actuarial science at the University of Copenhagen from 1923 to 1943. Steffensen's inequality and Steffensen's method (an iterative numerical method) are named after him. He was an Invited Speaker at the 1912 International Congress of Mathematicians (ICM) in Cambridge, England at the 1924 ICM in Toronto.[1]
Publications
- Factorial moments and discontinuous frequency-functions. Uppsala: Almqvist & Wiksells Boktryckeri-A.B. 1923; 89 pages
{{cite book}}: CS1 maint: postscript (link) - Interpolation. London: Williams & Wilkins. 1927.[2]
Obituary
- Nordlund N. E. (1962). "Johan Frederik Steffensen in memoriam". Nordisk Matematisk Tidsskrift. 10: 105–107.
References
- ^ "Steffensen, J. F." ICM Plenary and Invited Speakers.
- ^ Longley, W. R. (1928). "Review of Interpolation by J. F. Steffensen and Numerische Infinitesmalrechnung by Martin Lindow". Bull. Amer. Math. Soc. 34 (5): 674–675. doi:10.1090/S0002-9904-1928-04674-8.
External links
- Johan Frederik Steffensen papirer (Danish)
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