MacTutor
Mathematicians Of The Day
20th June
On this day in 1877, Georg Cantor wrote to to Dedekind, announcing a proof that the points inside a square are in one-to-one correspondence with those on a line segment. Three years earlier, Cantor had intimated that this was clearly impossible.
See THIS LINK.
See THIS LINK.
Click on Ⓟ for a poster.
Born:
- 1775: Jacques Français
- 1838: Theodor Reye Ⓟ
- 1873: Alfred Loewy Ⓟ
- 1880: George Carse Ⓟ
- 1885: F F P Bisacre
- 1907: John Womersley Ⓟ
- 1917: Helena Rasiowa Ⓟ
- 1942: Neil Trudinger Ⓟ
- 1946: Nigel Kalton Ⓟ
Died:
- 1800: Abraham Kästner Ⓟ
- 1863: Vincenzo Flauti
- 1963: Raphaël Salem Ⓟ
- 1966: Georges Lemaître Ⓟ
- 1990: Kosaku Yosida Ⓟ
- 2012: William Wager Cooper Ⓟ