You can find specialized books consisting entirely or problems from particular math domains (e.g. linear algebra, polynomials, combinatorics), but I've yet to find such a book for automata of any kind.

  • $\begingroup$ The exercises in Hopcroft & Ullman first edition, and possibly also the earlier FLRA book by them (available online at dl.acm.org/citation.cfm?id=1096945)? $\endgroup$ Commented Feb 20, 2014 at 22:11
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    $\begingroup$ I would like such a book, pretty sure there isn't one though. If we were to build one as a community, Shiva Kintali's site TrueShelf would be a good place to collect such problems. trueshelf.com/all $\endgroup$ Commented Feb 20, 2014 at 22:55
  • $\begingroup$ Similar question: cstheory.stackexchange.com/questions/1955/… $\endgroup$
    – Sylvain
    Commented Feb 21, 2014 at 13:27
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    $\begingroup$ The book "Elements of Automata Theory" by Sakarovitch covers Automata Theory deeply. However, he uses a different notation compared to TCS-oriented texts. Once you got over this, its a pretty good book. $\endgroup$
    – A.Schulz
    Commented Mar 23, 2014 at 21:47

1 Answer 1


Sort of indirectly, this book is about research level automata problems:


An automatic sequence is essentially a set of strings which can be computed by a DFA.


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