A Fractal Celtic Key Pattern?

Paul Gailiunas
Proceedings of Bridges 2010: Mathematics, Music, Art, Architecture, Culture (2010)
Pages 293–298 Regular Papers


A particular Celtic key pattern, dating from around 1000 AD, displays conspicuous self-similarity, which can be developed in a natural way to any depth of recursion. Such self-similar structures, although rare, are not unknown in the medieval period, but it is unlikely that there was a well-developed concept of recursion at that time.