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arxiv: 0810.4249 · v1 · submitted 2008-10-23 · 💻 cs.CC

Ogden's Lemma for Regular Tree Languages

classification 💻 cs.CC
keywords lemmalanguagesogdenregulartreecontext-freecorrespondentmotivate
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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.

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