MyhillNerode.thy
2010-10-23 wu add some proofs about the other direction
2010-10-22 urbanc deleted two unnecessary lemmas
2010-10-21 urbanc tried at the end to prove the other direction (failed at the moment)
2010-10-21 urbanc deleted the matcher ate the beginning; made it to work with stable Isabelle and the development version
2010-10-20 wu former version has a ugly usage of "overloaded";
2010-10-03 urbanc test
2010-10-03 urbanc added initial version by Chunhan
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