Mathematicians Of The Day: 30th September

On this day in 1938, Olga Taussky married Jack Todd. 50 years later she said:-

My life and my career would have been so different if my Irishman had not come along.

The postage stamp of one of today's mathematicians at THIS LINK was issued in 1966.

Click on Ⓟ for a poster.

Born:

1550: Michael Mästlin Ⓟ

1775: Robert Adrain Ⓟ

1829: Joseph Wolstenholme Ⓟ

1883: Ernst Hellinger Ⓟ

1891: Otto Yulyevich Schmidt Ⓟ

1894: Dirk Struik Ⓟ

1913: Samuel Eilenberg Ⓟ

1918: Leslie Fox Ⓟ

1927: Sigurður Helgason Ⓟ

Died:

1612: João Delgado

1632: Thomas Allen Ⓟ

1930: Lászlo Rátz Ⓟ

1946: Henry Plummer Ⓟ

1953: Lewis Fry Richardson Ⓟ

1968: Francesco Cecioni Ⓟ

2003: Geoffrey Kneebone Ⓟ

2015: Stanisław Świerczkowski Ⓟ

2017: Vladimir Voevodsky Ⓟ