The Theory of Languages and Computation
This note covers the following topics: Automata, Set Theory, The Natural numbers and Induction, Foundations of Language Theory, Operations on Languages, Deterministic Finite Automata, Formal Languages, Computability, Computations of Turing Machines, The Primitive Recursive Functions, The Partial Recursive Functions, DNA Computing, Analog Computing and Scientific Computing.
Author(s): Jean Gallier and Andrew Hicks
109 Pages 
This note contains below topics, Alphabets, strings, languages, and finite automata, Regular sets, regular expressions, and regular grammars, Context free grammars and languages, Pushdown automata, Turing machines and computability.
Author(s): P Anjaiah, B Ramyasree, E Umashankari, and A Jayanthi, Institute of Aeronautical Engineering
158 Pages
This note contains below topics, Strings and formal languages, Deterministic and nondeterministic finite automata, Regular expressions, Context free languages, Turing machines, Undecidability.
Author(s): Jeff Erickson, University of Illinois Urbana-Champaign
155 Pages
Theory of Computation by Frank Stephan
This note explains the following topics, sets and regular expressions, Grammars and the chomsky hierarchy, Finite automata, Nondeterministic finite automata, Combining languages, Normal forms and algorithms, Deterministic membership testing, Nondeterministic membership testing, Models of computation, Complexity considerations, Undecidable problems, Undecidability and formal languages.
Author(s): Frank Stephan
176 Pages
Introduction to the Theory of Computing
This pdf includes overview and mathematical foundations, Regular operations and regular expressions, Proving languages to be nonregular, Further discussion of regular languages, Parse trees, ambiguity, and Chomsky normal form, Pushdown automata, Turing machines, Variants of Turing machines, Stack machines, Universal Turing machines and undecidable languages, Further discussion of computability.
Author(s): University of Waterloo
227 Pages
Theory of Computation by Kyle Burke
This pdf begins with an overview of resources, organization and motivation and preview of CS theory covering the Limits of Computation, the Undecidability of the Halting Problem.The Automata and Machines including Deterministic and Nondeterministic Finitestate Automata, Pushdown Automata, and Turing Machines and Language Classes. Finally focus shifts to Computational Complexity, discussing NPCompleteness, Approximation Algorithms, and the Hardness of Approximation.
Author(s): Kyle Burke
114 Pages
Lecture Notes Theory of Computation
This lecture note from S R Engineering College offers a detailed introduction to key concepts in the Theory of Computation. It begins with Properties of Binary Operations, exploring fundamental mathematical operations and their essential properties like associativity and commutativity. The section on Concatenation Properties covers how strings can be joined and the characteristics of such operations, including associativity and the identity element. Finite Automata are thoroughly discussed, explaining both deterministic and nondeterministic NFA models, and their role in recognizing regular languages. The notes also cover Formal Languages, categorizing them into regular, contextfree, contextsensitive, and recursively enumerable types based on complexity. Finally, the Pumping Lemma is introduced as a critical tool for proving the nonregularity and noncontextfreeness of languages by demonstrating how strings in these languages can be decomposed and manipulated.
Author(s): S R Engineering College
155 Pages
