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  2. Infinite dihedral group - Wikipedia

    en.wikipedia.org/wiki/Infinite_dihedral_group

    In mathematics, the infinite dihedral group Dih ∞ is an infinite group with properties analogous to those of the finite dihedral groups. In two-dimensional geometry , the infinite dihedral group represents the frieze group symmetry, p 1 m 1, seen as an infinite set of parallel reflections along an axis.

  3. Dihedral group - Wikipedia

    en.wikipedia.org/wiki/Dihedral_group

    The infinite dihedral group is an infinite group with algebraic structure similar to the finite dihedral groups. It can be viewed as the group of symmetries of the integers. The orthogonal group O(2), i.e., the symmetry group of the circle, also has similar properties to the dihedral groups.

  4. Generalized dihedral group - Wikipedia

    en.wikipedia.org/wiki/Generalized_dihedral_group

    In mathematics, the generalized dihedral groups are a family of groups with algebraic structures similar to that of the dihedral groups. They include the finite dihedral groups, the infinite dihedral group, and the orthogonal group O(2). Dihedral groups play an important role in group theory, geometry, and chemistry.

  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 every pair of elements of the set to an element 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. Presentation of a group - Wikipedia

    en.wikipedia.org/wiki/Presentation_of_a_group

    If G is any group, and S is a generating subset of G, then every element of G is also of the above form; but in general, these products will not uniquely describe an element of G. For example, the dihedral group D 8 of order sixteen can be generated by a rotation, r, of order 8; and a flip, f, of order 2; and certainly any element of D 8 is a ...

  7. Apeirogon - Wikipedia

    en.wikipedia.org/wiki/Apeirogon

    The infinite dihedral group G of symmetries of a regular geometric apeirogon is generated by two reflections, the product of which translates each vertex of P to the next. [ 3 ] : 140–141 [ 4 ] : 231 The product of the two reflections can be decomposed as a product of a non-zero translation, finitely many rotations, and a possibly trivial ...

  8. Infinite group - Wikipedia

    en.wikipedia.org/wiki/Infinite_group

    In group theory, an area of mathematics, an infinite group is a group whose underlying set contains an infinite number of elements. In other words, it is a group of infinite order . Examples

  9. Affine symmetric group - Wikipedia

    en.wikipedia.org/wiki/Affine_symmetric_group

    When =, the affine symmetric group ~ is the infinite dihedral group generated by two elements , subject only to the relations = =. [ 4 ] These relations can be rewritten in the special form that defines the Coxeter groups , so the affine symmetric groups are Coxeter groups, with the s i {\displaystyle s_{i}} as their Coxeter generating sets. [ 4 ]