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A base-60, or sexagesimal, number system, used by the ancient Babylonians.

A variable which belongs to exactly one of a finite number of categories.

A tree spread in which each node has a finite number of children.

A circle-preserving transformation composed of an even number of inversions.

A minimization of the maximum error for a fixed number of terms.

A formula which counts the number of fixed points for a topological transformation.

The symbol "+" which is used to denote a positive number or to indicate addition.

A quadrature (numerical integration) algorithm which has a number of desirable properties.

A partition whose conjugate partition is equivalent to itself. The Ferrers diagrams corresponding to the self-conjugate partitions for 3<=n<=10 are illustrated above. The ...

A real number that is b-normal for every base 2, 3, 4, ... is said to be absolutely normal. As proved by Borel (1922, p. 198), almost all real numbers in [0,1) are absolutely ...