permute
101Jessica Fridrich — This article is about the person Jessica Fridrich. For the speedsolving method of a rubik s cube, see Fridrich Method. Jessica Fridrich is the inventor of the most commonly used method for speed solving the Rubik s Cube, better known as… …
102Circular shift — In combinatorial mathematics, a circular shift is the operation of rearranging the entries in a tuple, either by moving the final entry to the first position, while shifting all other entries to the next position, or by performing the inverse… …
103Lagrange's identity — In algebra, Lagrange s identity is the identity:iggl( sum {k=1}^n a k^2iggr) iggl(sum {k=1}^n b k^2iggr) iggl(sum {k=1}^n a k b kiggr)^2 = sum {i=1}^{n 1} sum {j=i+1}^n (a i b j a j b i)^2 iggl(= {1 over 2} sum {i=1}^n sum {j=1}^n (a i b j …
104Quasinormal subgroup — In mathematics, in the field of group theory, a quasinormal subgroup, or permutable subgroup, is a subgroup of a group that commutes (permutes) with every other subgroup. The term quasinormal subgroup was introduced by Oystein Ore in 1937.Two… …
105Mathematics of Sudoku — The class of Sudoku puzzles consists of a partially completed row column grid of cells partitioned into N regions each of size N cells, to be filled in using a prescribed set of N distinct symbols (typically the numbers {1, ..., N}), so that each …
106Markov number — The first levels of the Markov number tree A Markov number or Markoff number is a positive integer x, y or z that is part of a solution to the Markov Diophantine equation studied by Andrey Markoff (1879 …
107NetCDF Operators — NCO (netCDF Operators) is a suite of programs designed to facilitate manipulation and analysis of self describing data stored in the netCDF format. Program Suite ncap netCDF Arithmetic Processor ncatted netCDF Attribute Editor ncbo netCDF Binary… …
108Method ringing — (also known as scientific ringing) is a form of change ringing (the practice of ringing a series of mathematical permutations on tuned bells, rather than a melody). In method ringing, the ringers are guided from permutation to permutation by… …
109Tyson Mao — (born May 8, 1984 in San Francisco, California), is one of the world s top competitive Rubik s Cube solvers. He is known especially for his prominence in the 3x3x3 blindfold Rubik s Cube category where, as of September 29th, 2008, he ranks 26th… …
110Random permutation statistics — The statistics of random permutations, such as the cycle structure of a random permutation are of fundamental importance in the analysis of algorithms, especially of sorting algorithms, which operate on random permutations. Suppose, for example,… …
