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  2. Permutation group - Wikipedia

    en.wikipedia.org/wiki/Permutation_group

    This permutation group is known, as an abstract group, as the dihedral group of ... Joseph J. (2006), A First Course in Abstract Algebra with Applications (3rd ...

  3. Abstract algebra - Wikipedia

    en.wikipedia.org/wiki/Abstract_algebra

    The permutations of the Rubik's Cube form a group, a fundamental concept within abstract algebra. In mathematics, more specifically algebra, abstract algebra or modern algebra is the study of algebraic structures, which are sets with specific operations acting on their elements. [1]

  4. Cyclic permutation - Wikipedia

    en.wikipedia.org/wiki/Cyclic_permutation

    A cyclic permutation consisting of a single 8-cycle. There is not widespread consensus about the precise definition of a cyclic permutation. Some authors define a permutation σ of a set X to be cyclic if "successive application would take each object of the permuted set successively through the positions of all the other objects", [1] or, equivalently, if its representation in cycle notation ...

  5. Group theory - Wikipedia

    en.wikipedia.org/wiki/Group_theory

    In abstract algebra, group theory studies the algebraic structures known as groups. The concept of a group is central to abstract algebra: other well-known algebraic structures, such as rings, fields, and vector spaces, can all be seen as groups endowed with additional operations and axioms. Groups recur throughout mathematics, and the methods ...

  6. Parity of a permutation - Wikipedia

    en.wikipedia.org/wiki/Parity_of_a_permutation

    Considering the symmetric group S n of all permutations of the set {1, ..., n}, we can conclude that the map sgn: S n → {−1, 1} that assigns to every permutation its signature is a group homomorphism. [2] Furthermore, we see that the even permutations form a subgroup of S n. [1] This is the alternating group on n letters, denoted by A n. [3]

  7. Permutation - Wikipedia

    en.wikipedia.org/wiki/Permutation

    A k-permutation of a multiset M is a sequence of k elements of M in which each element appears a number ... A First Course In Abstract Algebra (2nd ed.), Reading ...

  8. Mathematicians Solved a Notorious Old Problem, Shaking Up ...

    www.aol.com/mathematicians-solved-notorious-old...

    Representation theory transforms abstract algebra groups into things like simpler matrices. The field’s founder left a list of 43 problems for others to study, iterate on, and prove.

  9. Dihedral group of order 6 - Wikipedia

    en.wikipedia.org/wiki/Dihedral_group_of_order_6

    In terms of permutations the two group elements of G / A 3 are the set of even permutations and the set of odd permutations. If the original group is that generated by a 120°-rotation of a plane about a point, and reflection with respect to a line through that point, then the quotient group has the two elements which can be described as the ...