MacTutor
Mathematicians Of The Day
17th October
On this day in 1952, D H Lehmer announced that for n = 2203 and 2281 are Mersenne primes. He was aided by a SWAC computer, with the first result taking 59 minutes. SWAC had been built in 1950 in Los Angeles.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 1974.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 1974.
Click on Ⓟ for a poster.
Born:
- 1759: Jacob (II) Bernoulli Ⓟ
- 1808: Philip Kelland Ⓟ
- 1820: Édouard Roche Ⓟ
- 1870: David J Tweedie
- 1888: Paul Bernays Ⓟ
- 1927: Friedrich Hirzebruch Ⓟ
Died:
- 1817: John West
- 1887: Gustav Kirchhoff Ⓟ
- 1923: August Adler
- 1937: Frank Morley Ⓟ
- 1952: Ernest Vessiot Ⓟ
- 1963: Jacques Hadamard Ⓟ
- 1976: Edward Marczewski Ⓟ
- 1978: Gertrude Cox Ⓟ
- 1989: Mark Krein Ⓟ
- 2008: Andrew Gleason Ⓟ
Quotation of the day
From Frank Morley
If the angles of any triangle be trisected, the triangle, formed by the meets of pairs of trisectors, each pair being adjacent to the same side, is equilateral.
Morley's Theorem
