Bridges 2010 Regular Paper
A Fractal Celtic Key Pattern?
(Proceedings pages 293–298)
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.