Johan Frederik Steffensen

From Wikipedia, the free encyclopedia

Johan Frederik Steffensen (28 Feb. 1873, Copenhagen – 20 Dec. 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.

Publications

Factorial moments and discontinuous-frequency functions. Uppsala: Almqvist & Wiksells Boktryckeri-A.B. 1923.
Interpolation. London: Williams & Wilkins. 1927.

Obituary

N. E. Nordlund, "Johan Frederik Steffensen in memoriam", Nordisk Matematisk Tidsskrift, 10 (1962) 105–107.

External links

Johan Frederik Steffensen papirer (Danish)

Authority control	VIAF: 29892830 ISNI: 0000 0001 0962 5582

Persondata
Name	Steffensen, Johan Frederik
Alternative names
Short description	Danish mathematician
Date of birth	1873
Place of birth
Date of death	1961
Place of death

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