AUTOMATA THEORY. Background. Languages. Recursive Definitions. Regular Expressions. Finite Automata. Transition Graphs. Kleene's Theorem. Finite Automata with Output. Regular Languages. Nonregular Languages. Decidability. PUSHDOWN AUTOMATA THEORY. Context-Free Grammars. Grammatical Format. Pushdown Automata. CFG = PDA. Non-Context-Free Languages. Context-Free Languages. Decidability. TURING THEORY. Turing Machines. Post Machines. Minsky's Theorem. Variations on the TM. TM Languages. The Chomsky Hierarchy. Computers. Bibliography. Indexes.
Daniel Isaac Aryeh Cohen is an American mathematician and computer scientist who is now a professor emeritus at Hunter College.