Charles Coffin Sims (April 14, 1937 – October 23, 2017[1][2]) was an Americanmathematician best known for his work ingroup theory.[3] Together withDonald G. Higman he discovered theHigman–Sims group, one of thesporadic groups. Thepermutation group software developed by Sims also led to the proof of existence of theLyons group (also known as the Lyons–Sims group) and theO'Nan group (also known as the O'Nan–Sims group).
Sims was born and raised inElkhart, Indiana, and received hisB.S. from theUniversity of Michigan.[3] He did his graduate studies atHarvard University, where he was a student ofJohn G. Thompson and received hisPh.D. degree in 1963. In his thesis, he enumeratedp-groups, giving sharp asymptotic upper and lower bounds. Sims is one of the founders ofcomputational group theory and is theeponym of theSchreier–Sims algorithm. He was a faculty member at the Department of Mathematics atRutgers University from 1965 to 2007. During that period he served, in particular, as Department Chair (1982–84) and Associate Provost for Computer Planning (1984–87). Sims retired from Rutgers in 2007 and moved toSt. Petersburg, Florida.[4]
In 2012, he became a fellow of theAmerican Mathematical Society.[5]
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