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Converting successive natural numbers to the factorial number system produces those sequences in lexicographic order (as is the case with any mixed radix number system), and further converting them to permutations preserves the lexicographic ordering, provided the Lehmer code interpretation is used (using inversion tables, one gets a different ...
Its vertex coordinates (labels) are the permutations of the first n natural numbers. The edges identify the shortest possible paths (sets of transpositions) that connect two vertices (permutations). Two permutations connected by an edge differ in only two places (one transposition), and the numbers on these places are neighbors (differ in value ...
In mathematics, particularly in linear algebra, tensor analysis, and differential geometry, the Levi-Civita symbol or Levi-Civita epsilon represents a collection of numbers defined from the sign of a permutation of the natural numbers 1, 2, ..., n, for some positive integer n.
A natural index for the direct product of two permutation groups is the concatenation of two factoradic numbers, with two subscript "!"s. concatenated decimal factoradics permutation pair 0 10 0:0:0 ! 0:0:0 !
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.
A permutation group is a subgroup of a symmetric group; that is, its elements are permutations of a given set. It is thus a subset of a symmetric group that is closed under composition of permutations, contains the identity permutation, and contains the inverse permutation of each of its elements. [2]
A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. ... The numbers for which every permutation of digits is a prime.
The Catalan numbers are a sequence of natural numbers that occur in various counting problems, ... C n is the number of permutations of {1, ...