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Difino
| • | In mathematics, the classification of finite simple groups states thatevery finite simple group is cyclic, or alternating, or in one of 16 families of groups of Lie type (including the Tits group, which strictly speaking is not of Lie type),or one of 26 sporadic groups.
The list below gives all finite simple groups, together with their order, the size of the Schur multiplier, the size of the outer automorphism group, usually some small representations, and lists of all duplicates.(In removing duplicates it is useful to note that finite simple groups are determined by their orders, except thatthe groupBn(q) has the same order as Cn(q)for q odd, n > 2; and the groups A8 = A3(2) and A2(4)both have orders 20160.)
Notation: n is a positive integer, q > 1 is a power of a prime number p, and is the order of some underlying finite field.The order of the outer automorphism group is written asd·f·g, where d is the order of the group of "diagonal automorphisms", f is the order of the (cyclic) group of "field automorphisms" (generated by a Frobenius automorphism), and g is the order of the group of "graph automorphisms" (coming from automorphisms of the Dynkin diagram).
Source: [wikipedia: list of finite simple groups]
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