John (Jack) Todd

John Todd (May 16, 1911 – June 21, 2007) was a Northern Irish mathematician most of whose career was spent in England and the USA; he was a pioneer in the field of numerical analysis.

In his final year at the College he only studied maths as a result of his desire to become an engineer.

He taught at Queen's University Belfast 1933-1937, and was an invited speaker at the 1936 ICM in Oslo[2] on "Transfinite Superpositions of Absolutely Continuous Functions"[3] He worked at King's College in London for the years 1937–1939 (and again 1945–1947), where he met Olga Taussky, a matrix and number theorist (she had also been an invited speaker in Oslo).

One of Todd's greatest achievements was the preservation of the Mathematical Research Institute of Oberwolfach in Germany at the end of the war.

[4][5] In 1945 the Todds emigrated to the United States and worked for the National Bureau of Standards.