File:Introduction to Automata Theory, Languages, and Computation.jpg

Summary
This is the cover of a book by John Hopcroft and Jeffery Ullman, Introduction to Automata Theory, Languages, and Computation, first edition, published by Addison-Wesley in 1979. The cover is known as the "Cinderella cover".

Fair use in Introduction to Automata Theory, Languages, and Computation
Though this image is subject to copyright, its use is covered by the U.S. fair use laws because:
 * 1) It illustrates an educational article about the book from which the cover illustration was taken.
 * 2) The image is used as the primary means of visual identification of the article topic.
 * 3) The use of the cover will not affect the value of the original work or limit the copyright holder's rights or ability to distribute the original. In particular, copies could not be used to make illegal copies of the book.
 * 4) It is a low resolution image.
 * 5) The image is only a small portion of the commercial product.
 * 6) It is not replaceable with an uncopyrighted or freely copyrighted image of comparable educational value.

In addition, the cover of the book is discussed in the article. Because of the cover, the book has the nickname "The Cinderella Book".