plural of surjunctive group

(mathematics) A group such that every injective cellular automaton with the group elements as its cells is also surjective.

(mathematics) A topological semigroup that is algebraically a group.

plural of protecting group

a group of people who are approximately the same age and status, especially if they have the same interests

plural of Weyl group

(mathematics) A subgroup of the isometry group of a root system, generated by reflections through the hyperplanes orthogonal to the roots.

(mathematics) A group of Lie type over a finite field constructed from an exceptional automorphism of a Dynkin diagram that reverses the direction of the multiple bonds, generalizing the Suzuki group.

plural of Ree group

plural of simple group