13th April

Mathematicians Of The Day

13th April

On this day in 1560, Cardan's son Giambatista was executed after being found guilty of poisoning his wife. This was a blow from which Cardan never recovered.

The postage stamp of one of today's mathematicians at THIS LINK was issued in 1979.

Click on Ⓟ for a poster.

Born:

953: al-Karaji Ⓟ
1728: Paolo Frisi Ⓟ
1813: Duncan Gregory Ⓟ
1823: Oscar Schlömilch Ⓟ
1850: Arthur Downing Ⓟ
1869: Isabel Maddison Ⓟ
1879: Francesco Severi Ⓟ
1909: Stan Ulam Ⓟ
1914: Manuel Sadosky Ⓟ

Died:

1728: Samuel Molyneux
1890: Andrew Hart Ⓟ
1906: Raphael Weldon Ⓟ
1941: Annie Jump Cannon Ⓟ
2004: David Fowler Ⓟ
2014: Emma Castelnuovo Ⓟ

Quotation of the day

From Stan Ulam

What exactly is mathematics? Many have tried but nobody has really succeeded in defining mathematics; it is always something else. Roughly speaking, people know that it deals with numbers, figures, with relations, operations, and that its formal procedures involving axioms, proofs, lemmas, theorems have not changed since the time of Archimedes.

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