(mathematics) A theorem about packing congruent rectangular bricks into larger rectangular boxes so that no space is left over. It states that a "harmonic brick" (one in which each side length is a multiple of the next smaller side length) can only be packed into a box whose dimensions are multiples of the brick's dimensions.

(mathematics) A notation for representing terms in the lambda calculus with the purpose of eliminating the names of the variables from the notation.

plural of de Bruijn index

plural of de Bruijn graph

(graph theory) A kind of directed graph representing overlaps between sequences of symbols.

(combinatorics) An array of symbols from an alphabet (often just 0 and 1) that contains every m-by-n matrix exactly once.

plural of de Bruijn sequence

(mathematics) A certain syntax for terms in the lambda calculus.

plural of de Bruijn torus

(mathematics) A cyclic sequence (of order n on a size-k alphabet A) in which every possible length-n string on A occurs exactly once as a substring (i.e. a contiguous subsequence). Such a sequence is denoted by B(k, n).