Wed, 02 Feb 2011 15:43:22 +0000 urbanc more on the intro
Wed, 02 Feb 2011 13:54:07 +0000 urbanc a little bit in the introduction
Wed, 02 Feb 2011 13:25:09 +0000 zhang Myhill.pdf modified
Wed, 02 Feb 2011 06:05:12 +0000 urbanc removed the inductive definition of Star and replaced it by a definition in terms of pow
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