MacTutorMathematicians Of The Day
22nd July
Born:
- 1755: Gaspard de Prony (poster)
- 1784: Wilhelm Bessel (poster)
- 1795: Gabriel Lamé (poster)
- 1861: Ernst Fiedler
- 1872: Alexander Durie Russell (poster)
- 1882: Konrad Knopp (poster)
- 1887: Gustav Hertz (poster)
- 1902: Reinhold Baer (poster)
- 1904: Donald Eperson
- 1907: Edgar Raymond Lorch
- 1926: John Aitchison
- 1930: Shreeram Shankar Abhyankar
- 1935: John Stallings
- 1948: Chandra Kintala
Died:
- 1575: Francesco Maurolico (poster)
- 1943: William Osgood (poster)
- 1950: Vyacheslaw Vassilievich Stepanov (poster)
- 1959: David van Dantzig (poster)
- 1995: Otakar Boruvka (poster)
Quotation of the day
From Reinhold Baer
The main result of Gödel's paper ... can be formulated in a pointed and, hence not fully correct way as follows: if A is a countable, consistent logical system, for example arithmetic, then there is a proposition in A which is not decidable in A (but may be decidable in extended systems). Hurrah, logicians have also discovered diagonalisation!
Letter to Zermelo in 1931
