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  2. Cyclic number - Wikipedia

    en.wikipedia.org/wiki/Cyclic_number

    A cyclic number is an integer for which cyclic permutations of the digits ... Kalman, Dan; 'Fractions with Cycling Digit Patterns' The College Mathematics Journal ...

  3. Cyclic number (group theory) - Wikipedia

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

    A cyclic number [1] [2] is a natural number n such that n and φ(n) are coprime. Here φ is Euler's totient function. An equivalent definition is that a number n is cyclic if and only if any group of order n is cyclic. [3] Any prime number is clearly cyclic. All cyclic numbers are square-free. [4] Let n = p 1 p 2 …

  4. Cyclic group - Wikipedia

    en.wikipedia.org/wiki/Cyclic_group

    A number n is called a cyclic number if Z/nZ is the only group of order n, which is true exactly when gcd(n, φ(n)) = 1. [13] The sequence of cyclic numbers include all primes, but some are composite such as 15. However, all cyclic numbers are odd except 2. The cyclic numbers are:

  5. Cyclic permutation - Wikipedia

    en.wikipedia.org/wiki/Cyclic_permutation

    In mathematics, and in particular in group theory, a cyclic permutation is a permutation consisting of a single cycle. [1] [2] In some cases, cyclic permutations are referred to as cycles; [3] if a cyclic permutation has k elements, it may be called a k-cycle. Some authors widen this definition to include permutations with fixed points in ...

  6. Cyclic (mathematics) - Wikipedia

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

    Cyclic number, a number such that cyclic permutations of the digits are successive multiples of the number; Cyclic order, a ternary relation defining a way to arrange a set of objects in a circle; Cyclic permutation, a permutation with one nontrivial orbit; Cyclic polygon, a polygon which can be given a circumscribed circle

  7. List of small groups - Wikipedia

    en.wikipedia.org/wiki/List_of_small_groups

    Each group is named by Small Groups library as G o i, where o is the order of the group, and i is the index used to label the group within that order.. Common group names: Z n: the cyclic group of order n (the notation C n is also used; it is isomorphic to the additive group of Z/nZ)

  8. 142857 - Wikipedia

    en.wikipedia.org/wiki/142857

    142,857 is the natural number following 142,856 and preceding 142,858. It is a Kaprekar number. [1]142857, the six repeating digits of ⁠ 1 / 7 ⁠ (0. 142857), is the best-known cyclic number in base 10.

  9. Cycles and fixed points - Wikipedia

    en.wikipedia.org/wiki/Cycles_and_fixed_points

    In mathematics, the cycles of a permutation π of a finite set S correspond bijectively to the orbits of the subgroup generated by π acting on S. These orbits are subsets of S that can be written as { c 1, ..., c n}, such that π (c i) = c i + 1 for i = 1, ..., n − 1, and π (c n) = c 1. The corresponding cycle of π is written as ( c 1 c 2...