Limits of Computation: An Introduction to the Undecidable and the Intractable offers a gentle introduction to the theory of computational complexity. It explains the difficulties of computation, addressing problems that have no algorithm at all and problems that cannot be solved efficiently.
The book enables readers to understand:
Developed from the authors’ course on computational complexity theory, the text is suitable for advanced undergraduate and beginning graduate students without a strong background in theoretical computer science. Each chapter presents the fundamentals, examples, complete proofs of theorems, and a wide range of exercises.
Counting Arguments and Diagonalization
Languages: Alphabets, Strings, and Languages
Alphabets and Strings
Operations on Strings
Operations on Languages
Traveling Salesman Problem
Algorithms: A First Look
Efficiency in Algorithms
Counting Steps in an Algorithm
Properties of O Notation
Finding O: Analyzing an Algorithm
Best and Average Case Analysis
Tractable and Intractable
The Turing Machine Model
Formal Definition of Turing Machine
Configurations of Turing Machines
Some Sample Turing Machines
Turing Machines: What Should I Be Able to Do?
Other Versions of Turing Machines
Turing Machines to Evaluate a Function
E numerating Turing Machines
The Church–Turing Thesis
A Simple Computer
Encodings of Turing Machines
Universal Turing Machine
Introduction and Overview
Self-Reference and Self-Contradiction in Computer Programs
Cardinality of the Set of All Languages over an Alphabet
Cardinality of the Set of All Turing Machines
Construction of the Undecidable Language ACCEPTTM
Undecidability and Reducibility
Undecidable Problems: Other Examples
Reducibility and Language Properties
Reducibility to Show Undecidability
Rice’s Theorem (a Super-Theorem)
Undecidability: What Does It Mean?
Post Correspondence Problem
Classes NP and NP-Complete
The Class NP (Nondeterministic Polynomial)
Definition of P and NP
Intractable and Tractable—Once Again
A First NP-Complete Problem: Boolean Satisfiability
Cook–Levin Theorem: Proof
More NP-Complete Problems
Adding Other Problems to the List of Known NP-Complete Problems
Reductions to Prove NP-Completeness
Vertex Cover: The First Graph Problem
Other Graph Problems
Hamiltonian Circuit (HC)
Eulerian Circuits (an Interesting Problem in P)
Three-Dimensional Matching (3DM)
Summary and Reprise
Other Interesting Questions and Classes
Open Quest ions
Are There Any Problems in NP-P But Not NP-Complete?
NPSPACE = PSPACE
A PSPACE Complete Problem
Other PSPACE-Complete Problems
The Class EXP
Approaches to Hard Problems in Practice
Exercises appear at the end of each chapter.
Edna E. Reiter, Ph.D., is the current Chair of the Department of Mathematics and Computer Science at California State University, East Bay (CSUEB). Her research interests include noncommutative ring theory and theoretical aspects of computer science.
Clayton Matthew Johnson, Ph.D., is the graduate coordinator for all M.S. students and the incoming Chair of the Department of Mathematics and Computer Science at CSUEB. His research interests include genetic algorithms and machine learning.
Drs. Reiter and Johnson developed the subject matter for the CSUEB Computation and Complexity course, which is required for all students in the computer science M.S. program. The course covers the hard problems of computer science—those that are intractable or undecidable. The material in this book has been tested on multiple sections of CSUEB students.
"… a very basic, reader friendly introduction to computational complexity theory. What sets their book apart from others on the topic is its leisurely pace. … Because the book is so readable, it is likely that its primary audience will include students who experienced difficulties with other books on the topic. However, those students would probably benefit from more exercises than this volume provides, especially full solutions, at least for some exercises. … Highly recommended. Lower-division undergraduates.
—M Bona, University of Florida in CHOICE Magazine, June 2013
"This excellent book on DSNs has a wealth of information for researchers, engineers, and scientists. It could be used as a textbook for graduate-level and doctoral courses on DSNs, and would also serve as a reference for engineers, scientists, and researchers working in this field."
—Computing Reviews, April 2013
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