Introduction to Automata Theory, Languages, and Computation: Errata for the First through Fourth Printings
    List of Errata for the First, Second, and Third Printings Only.

    List of Errata for the First and Second Printings Only.

    List of Errata for the First Printing Only.

    In addition: the following were not corrected in time for the fourth printing:

    LocationProblemReported ByDate Reported
    p. 5, l. 1 A correct expression is '[A-Z][a-z]* ([ ][A-Z][a-z]*)*[ ][A-Z][A-Z]' Daniel Suen 8/16/02
    p. 20, l. 5 "a least" -> "the least" Brandon Gray 9/10/02
    p. 96, l. 17-18 The expressions are for the R^(k)'s, and they contain the subsexpression (R_kk^(k-1))* Nezam Mahdavi-Amiri 1/22/03
    p. 133, l. -2 Delete second "and" Nezam Mahdavi-Amiri 1/30/03
    p. 146, Exercise 4.2.3, l. 1 "Lf" -> "If" Brandon Gray 10/30/02
    p. 164, l. -3 First "are" -> "and" Dongsoo Jang 4/23/02
    p. 166, reference 4 Date is 1971 Nezam Mahdavi-Amiri 1/30/03
    p. 177, Sect. 5.1.5, l. 1 "=" needed after G in G(V,T... Jose Brito 8/28/02
    p. 189, l. 13: A -> E Alexey Sarytchev 11/26/02
    p. 198, l. 21 "are" -> "is" Nezam Mahdavi-Amiri 2/4/03
    p. 201, l. -3 "Is" -> "is" Nezam Mahdavi-Amiri 2/4/03
    p. 214, l. 3 delete "| ab" from the productions for A_2 Alexey Sarytchev 11/26/02
    p. 235, l. 15, 16 single left quotes should be double quotes Magdiel Galan 4/30/02
    p. 259, l. 20 "with out" -> "without" Jose Brito 8/28/02
    p. 409, Exercise 9.5.3 The condition defining L_AB should be that 1, 2, 3, and at least one of 4-7 hold. Rod Howell 5/6/02
    p. 424, l. 12 comma should appear on the previous line Andrzej Wasowski 5/30/02
    p. 468, ref. 7 The correct pages are 115-116. Marcus Hutter 9/13/02

    Also, thanks to Jose Brito, Darren Brown, David Brumley, Michael Dautermann, Gabor Hardy, Rakesh Kumar, Troy Landers, Terry Lewis, Heather Mahaney, Prashant Shah, Jackie Song, Alexei Stanger, Chang-Hsien Tsai, Rod Topor, Chittaranjan Tripathy, Paavo Turakainen, Tom Whaley, Jacinth H.T. Wu, and Ivan Zdanov for correcting errors in the posted solutions.