English

Ogden's Lemma for Regular Tree Languages

Computational Complexity 2008-10-24 v1

Abstract

We motivate and prove a strong pumping lemma for regular tree languages. The new lemma can be seen as the natural correspondent of Ogden's lemma for context-free string languages.

Cite

@article{arxiv.0810.4249,
  title  = {Ogden's Lemma for Regular Tree Languages},
  author = {Marco Kuhlmann},
  journal= {arXiv preprint arXiv:0810.4249},
  year   = {2008}
}
R2 v1 2026-06-21T11:34:10.799Z