He was a major influence on the classification of finite simple groups.

This result is based on classification of finite simple groups.

They have had a deep impact on the classification of finite simple groups.

Includes a list of all nonabelian simple groups up to order 10.

There are similar examples associated to some of the other sporadic simple groups.

On the simple group F of order 2 3 5 7 11 19.

It thus plays a major role in the classification of finite simple groups.

Many of these special properties are related to certain sporadic simple groups.

There is as yet no known classification for general simple groups.

The name is misleading because a simple group can in fact be very complex.