Latin squares

Swiss mathematician, physicist, and engineer (1707–1783)

Sudoku (; ; originally called Number Place) is a logic-based, combinatorial number-placement puzzle. In classic Sudoku, the objective is to fill a 9 × 9 grid with digits so that each column, each row, and each of the nine 3 × 3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which, for a well-posed puzzle, has a single solution.

square array with symbols that each occur once per row and column

In mathematics, especially in abstract algebra, a quasigroup is an algebraic structure that resembles a group in the sense that "division" is always possible. Quasigroups differ from groups mainly in that the associative and identity element properties are optional. In fact, a nonempty associative quasigroup is a group.

mathematical problem

matrix in which each row is rotated one position to the right from the previous row

Indian mathematician (1901–1987)

, or More or Less, is a logic puzzle game from Japan. Its name means "inequality". It is also spelled hutosiki (using Kunrei-shiki romanization). Futoshiki was developed by Tamaki Seto in 2001.

American mathematician

Indian mathematician

statistical method for generating a near-random sample of parameter values from a multidimensional distribution

check digit algorithm presented by H. Michael Damm

theorem in combinatorics on the extension of arrays to partial Latin squares

type of mathematical array