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  2. Z-group - Wikipedia

    en.wikipedia.org/wiki/Z-group

    A (Z)-group is a group faithfully represented as a doubly transitive permutation group in which no non-identity element fixes more than two points. A (ZT)-group is a (Z)-group that is of odd degree and not a Frobenius group , that is a Zassenhaus group of odd degree, also known as one of the groups PSL(2,2 k +1 ) or Sz(2 2 k +1 ) , for k any ...

  3. List of small groups - Wikipedia

    en.wikipedia.org/wiki/List_of_small_groups

    List of all nonabelian groups up to order 31 Order Id. [a] G o i Group Non-trivial proper subgroups [1] Cycle graph Properties 6 7 G 6 1: D 6 = S 3 = Z 3 ⋊ Z 2: Z 3, Z 2 (3) : Dihedral group, Dih 3, the smallest non-abelian group, symmetric group, smallest Frobenius group.

  4. Center (group theory) - Wikipedia

    en.wikipedia.org/wiki/Center_(group_theory)

    If the quotient group G/Z(G) is cyclic, G is abelian (and hence G = Z(G), so G/Z(G) is trivial). The center of the Rubik's Cube group consists of two elements – the identity (i.e. the solved state) and the superflip. The center of the Pocket Cube group is trivial. The center of the Megaminx group has order 2, and the center of the Kilominx ...

  5. Group (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Group_(mathematics)

    The manipulations of the Rubik's Cube form the Rubik's Cube group.. In mathematics, a group is a set with an operation that associates an element of the set to every pair of elements of the set (as does every binary operation) and satisfies the following constraints: the operation is associative, it has an identity element, and every element of the set has an inverse element.

  6. Elementary abelian group - Wikipedia

    en.wikipedia.org/wiki/Elementary_abelian_group

    Here, Z/pZ denotes the cyclic group of order p (or equivalently the integers mod p), and the superscript notation means the n-fold direct product of groups. [ 2 ] In general, a (possibly infinite) elementary abelian p -group is a direct sum of cyclic groups of order p . [ 4 ] (

  7. Presentation of a group - Wikipedia

    en.wikipedia.org/wiki/Presentation_of_a_group

    A free group on a set S is a group where each element can be uniquely described as a finite length product of the form: . where the s i are elements of S, adjacent s i are distinct, and a i are non-zero integers (but n may be zero).