Mathematics and Computer Science II
Drmota, Michael, Brigitte Chauvin, Philippe Flajolet, Danièle Gardy, Gittenberger, Bernhard, Abdelkader Mokkadem · Birkhäuser Basel eBooks · 2002
The lega on the cover is a binary search tree in which the directions of child nodes alternate between horizontal and vertical, and the edge lengths decrease as 1 over the square root of 2. The tree is a Weyl tree, which means that it is a binary search tree constructed from a Weyl sequence, Le., a sequence (na) mod 1, n = 1,2 •...• where a is an irrational real number.