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An easy-to-comprehend text for required undergraduate courses in computer theory, this work thoroughly covers the three fundamental areas of computer theory--formal languages, automata theory, and Turing machines. It is an imaginative and pedagogically strong attempt to remove the unnecessary mathematical complications associated with the study of these subjects. The author substitutes graphic representation for symbolic proofs, allowing students with poor mathematical background to easily follow each step. Includes a large selection of well thought out problems at the end of each chapter.
Automata theory. Background. Languages. Recursive definitions. Regular expressions. Finite automata. Transition graphs. Kleene's theorem. Nondeterminism. Finite automata with output. Regular languages. Nonregular languages. Decidability. Pushdown automata Theory. Context-free grammars. Trees. Regular grammars. Chomsky normal form. Pushdown automata. CFG=PDA. Context-free languages. Non-context-free languages. Intersection and complement. Parsing. Decidability. Turing theory. Turing machines. Post machines. Minsky's theorem. Variations on the TM. Recursively enumerable languages. The encoding of turing machines. The chomsky hierarchy. Computers. Bibliography. Table of theorems.
Market_Desc: · Computer Scientists· Students · Professors Special Features: · Easy to read and the coverage of mathematics is fairly simple so readers do not have to worry about proving theorems· Contains new coverage of Context Sensitive Language About The Book: This text strikes a good balance between rigor and an intuitive approach to computer theory. Covers all the topics needed by computer scientists with a sometimes humorous approach that reviewers found refreshing . The goal of the book is to provide a firm understanding of the principles and the big picture of where computer theory fits into the field.
Finite State SystemsDFA, NDFA and there equivalence. Conversion of NDFA, DFA, DFA with E-Moves, Two-way Finite Automata, Finite Automata with output, Transformation of a Mealy Machine into a Moore Machine and their conversion, FSM properties and limitations.Regular ExpressionsArden's Theorem, Pumping Lemma and its applications, closure properties. Decision Algorithms of Regular Sets, Applications of regular expressions and finite Automata.GrammersInvention and evolution of Formal LanguagesPushdown AutomataAssociation of push down automata with context - free grammers.Post MachinesDefinitions and examplesProduction SystemsFundaments, PMT Systems, PCS, Markou AlgorithimTuring MachinesModel, Representation, Language Acceptability and design of Turing Machines. Nondeterministic, Composite, Integrated, Universal, Turing Machines, Limitations, Recursive and Recursively Enumerable Languages, functionsApplications and LimitationsLexical Analyzer, Text Editors, Searching, Conversion of regular expression into a DFA.
The third edition of "Languages and Machines: An Introduction to the Theory of Computer Science "provides readers with a mathematically sound presentation of the theory of computer science. The theoretical concepts and associated mathematics are made accessible by a "learn as you go" approach that develops an intuitive understanding of the concepts through numerous examples and illustrations.

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