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Apr 13, 2017 at 12:48 history edited CommunityBot
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Sep 3, 2015 at 8:43 comment added Raphael While correct, this is disappointing standing alone: since regular languages are often defined via regular expressions (i.e. inductively), one should hope that there are patterns/heuristics that allow to come up with one directly. (Myself, I think I'd always go via automata. I think I have a useful answer in that vein, but that should probably go to the "how to prove regular" question?)
Aug 25, 2015 at 20:30 history edited D.W. CC BY-SA 3.0
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Aug 25, 2015 at 20:22 history answered D.W. CC BY-SA 3.0