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The first edition of Introduction to Automata Theory, Languages, and Computation was published in 1979, the second edition in November 2000, and the third edition appeared in February 2006. Since the second edition, Rajeev Motwani has joined Hopcroft and Ullman as the third author.
Hopcroft, John E.; Ullman, Jeffrey D. (1979). Introduction to Automata ... edition of Introduction to Automata Theory, Languages, and Computation, by Hopcroft and ...
The theory of computation can be considered the creation of models of all kinds in the field of computer science. Therefore, mathematics and logic are used. In the last century, it separated from mathematics and became an independent academic discipline with its own conferences such as FOCS in 1960 and STOC in 1969, and its own awards such as the IMU Abacus Medal (established in 1981 as the ...
This template is used to cite the 2006 (3rd) edition of Introduction to Automata Theory, Languages, and Computation, by Hopcroft, Motwani, and Ullman. See also [ edit ]
Ullman is the co-recipient (with John Hopcroft) of the 2010 IEEE John von Neumann Medal "For laying the foundations for the fields of automata and language theory and many seminal contributions to theoretical computer science." [6] Ullman, Hopcroft, and Alfred Aho were co-recipients of the 2017 C&C Prize awarded by NEC Corporation. [7]
The diagram "progress of the computation" shows the three-state busy beaver's "state" (instruction) progress through its computation from start to finish. On the far right is the Turing "complete configuration" (Kleene "situation", Hopcroft–Ullman "instantaneous description") at each step.
In the theory of computation, a branch of theoretical computer science, a pushdown automaton (PDA) is a type of automaton that employs a stack. Pushdown automata are used in theories about what can be computed by machines. They are more capable than finite-state machines but less capable than Turing machines (see below).
He was an author of two widely used theoretical computer science textbooks: Randomized Algorithms with Prabhakar Raghavan [9] and Introduction to Automata Theory, Languages, and Computation with John Hopcroft and Jeffrey Ullman. [10] He was an avid angel investor and helped fund a number of startups to emerge from Stanford.