MacTutor
Mathematicians Of The Day
30th June
On this day in 1742, Leonard Euler claimed in a letter to Goldbach that prime numbers of the form 4n+ 1 are represented uniquely as a sum of two squares.
He also mentioned that 641 divides , thereby disproving Fermat's claim that all the so-called numbers Fermat numbers are prime. Years later we have not found another with n > 4 which is prime.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 1976.
He also mentioned that 641 divides , thereby disproving Fermat's claim that all the so-called numbers Fermat numbers are prime. Years later we have not found another with n > 4 which is prime.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 1976.
Click on Ⓟ for a poster.
Born:
- 1748: Dominique Cassini Ⓟ
- 1791: Félix Savart Ⓟ
- 1846: Eugen Netto Ⓟ
- 1856: Cargill Knott Ⓟ
- 1868: Geoffrey Bennett Ⓟ
- 1876: Anton Davidoglu Ⓟ
- 1880: Rudolf Fueter Ⓟ
- 1900: Gheorghe Vrănceanu Ⓟ
- 1907: Dmitrii Konstantinovich Faddeev Ⓟ
- 1909: Danuta Gierulanka Ⓟ
- 1923: Murray Macbeath Ⓟ
- 1958: Abigail Thompson Ⓟ
Died:
- 1817: Li Rui
- 1919: John William Strutt Ⓟ
- 1960: Albert Châtelet Ⓟ
- 1972: Yuri Vladimirovich Linnik Ⓟ
- 2002: Claude Berge Ⓟ
- 2019: Mitchell Feigenbaum Ⓟ
Quotation of the day
From John William Strutt
Some proofs command assent. Others woo and charm the intellect. They evoke delight and an overpowering desire to say, "Amen, Amen".
