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The Modular Tree of Pythagorus

History and Overview 2007-05-23 v1

Abstract

The Pythagorean triples have the structure of a ternary rooted tree; the tree is based on the Cayley graph of a free subgroup of the modular group

Cite

@article{arxiv.math/0010281,
  title  = {The Modular Tree of Pythagorus},
  author = {Roger C. Alperin},
  journal= {arXiv preprint arXiv:math/0010281},
  year   = {2007}
}