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In the theory of Coxeter groups, the symmetric group is the Coxeter group of type A n and occurs as the Weyl group of the general linear group. In combinatorics , the symmetric groups, their elements ( permutations ), and their representations provide a rich source of problems involving Young tableaux , plactic monoids , and the Bruhat order .
The Cayley table tells us whether a group is abelian. Because the group operation of an abelian group is commutative, a group is abelian if and only if its Cayley table's values are symmetric along its diagonal axis. The group {1, −1} above and the cyclic group of order 3 under ordinary multiplication are both examples of abelian groups, and ...
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The following table is a complete list of the 18 families of finite simple groups and the 26 sporadic simple groups, along with their orders. Any non-simple members of each family are listed, as well as any members duplicated within a family or between families.
The alternating groups for n ≥ 5 have only one one-dimensional irreducible representation, the trivial representation. For n = 3, 4 there are two additional one-dimensional irreducible representations, corresponding to maps to the cyclic group of order 3: A 3 ≅ C 3 and A 4 → A 4 /V ≅ C 3.
Cayley table as general (and special) linear group GL(2, 2) In mathematics , D 3 (sometimes alternatively denoted by D 6 ) is the dihedral group of degree 3 and order 6. It equals the symmetric group S 3 .
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Generators and Relations for Discrete Groups. New York: Springer-Verlag. ISBN 0-387-09212-9. ― This useful reference has tables of presentations of all small finite groups, the reflection groups, and so forth. Johnson, D. L. (1997). Presentations of Groups (2nd ed.). Cambridge: Cambridge University Press. ISBN 0-521-58542-2.