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Non-Context-Free Languages - The Pumping Lemma - Hampden ...

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<strong>The</strong> Proof<br />

<strong>Non</strong>-<strong>Context</strong>-<br />

<strong>Free</strong><br />

<strong>Languages</strong> -<br />

<strong>The</strong> <strong>Pumping</strong><br />

<strong>Lemma</strong><br />

Robb T.<br />

Koether<br />

Collected<br />

Problems<br />

<strong>Non</strong>-<strong>Context</strong>-<br />

<strong>Free</strong><br />

<strong>Languages</strong><br />

<strong>The</strong> <strong>Pumping</strong><br />

<strong>Lemma</strong><br />

<strong>The</strong> proof is somewhat similar to the proof of the<br />

<strong>Pumping</strong> <strong>Lemma</strong> for Regular <strong>Languages</strong> except that it<br />

is based on a grammar rather than a machine.<br />

But first, an example. . .<br />

An Example<br />

<strong>The</strong> Proof<br />

Another<br />

Example<br />

Assignment

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