# Mathematician:Charles Coffin Sims

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## Mathematician

American mathematician active in the field of group theory.

With Donald Gordon Higman, discovered the Higman-Sims group.

Developed software leading up to the discovery of the Lyons group (also known as Lyons-Sims group) and O'Nan group (also known as O'Nan-Sims group).

## Nationality

American

## History

- Born: 14 April 1937 in Elkhart, Indiana, USA
- Died: 23 October 2017 in St Petersburg, Florida, USA

## Theorems and Definitions

- Higman-Sims Group (with Donald Gordon Higman)
- Schreier-Sims Algorithm (with Otto Schreier)
- O'Nan-Sims Group (with Michael Ernest O'Nan)
- Lyons-Sims Group (with Richard Neil Lyons)

## Publications

- 1968:
*A simple group of order 44,352,000*(*Math. Z.***Vol. 105**,*no. 2*: pp. 110 – 113) (with Donald G. Higman) - 1973:
*The existence and uniqueness of Lyons' group*