Harald Cramer
Harald Cramér (born September 25, 1893 , † October 5, 1985 ) was a Swedish mathematician and statistician . Cramér taught from 1929 to 1958 as a professor at Stockholm University , where he was rector and later university chancellor from 1950 to 1961.
Professional
His well-known theorem by Cramér says that the summands of a normally distributed sum of independent random variables are also normally distributed. In addition, Cramér-Wold's theorem from the theory of measure is named after Harald Cramér and Herman Ole Andreas Wold .
In addition to his main field, mathematical statistics, Cramér also made significant contributions to the study of the distribution of prime numbers and prime twins . For his work he was awarded the Guy Medal in gold by the Royal Statistical Society in 1972. In 1961 he was elected to the American Academy of Arts and Sciences , and in 1984 to the National Academy of Sciences .
His PhD students include Kai Lai Chung and Herman Wold .
Fonts
- Mathematical Methods of Statistics. Almqvist and Wiksells, Uppsala 1945 (19th printing. Princeton University Press, Princeton NJ 1999, ISBN 0-691-00547-8 ).
See also
Web links
- Literature by and about Harald Cramér in the catalog of the German National Library
- Extract of the main work Mathematical Methods of Statistics (English)
- Andrew Granville : Harald Cramer and the distribution of prime numbers. In: Scandinavian Actuarial Journal. No. 1, 1995, ISSN 0346-1238 , pp. 12-28, online [1] (PDF; 275 kB) or [2] (PDF; 664 kB).
| personal data | |
|---|---|
| SURNAME | Cramer, Harald |
| BRIEF DESCRIPTION | Swedish mathematician and statistician |
| DATE OF BIRTH | September 25, 1893 |
| DATE OF DEATH | 5th October 1985 |