CS3452 THEORY OF COMPUTATION SYLLABUS
CS3452 THEORY OF COMPUTATION L T P C 3 0 0 3
• To understand foundations of computation including automata theory
• To construct models of regular expressions and languages.
• To design context free grammar and push down automata
• To understand Turing machines and their capability
• To understand Undecidability and NP class problems
UNIT I AUTOMATA AND REGULAR EXPRESSIONS 9
Need for automata theory – Introduction to formal proof – Finite Automata (FA) – Deterministic Finite Automata (DFA) – Non-deterministic Finite Automata (NFA) – Equivalence between NFA and DFA – Finite Automata with Epsilon transitions – Equivalence of NFA and DFA- Equivalence of NFAs with and without ε-moves- Conversion of NFA into DFA – Minimization of DFAs.
UNIT II REGULAR EXPRESSIONS AND LANGUAGES 9
Regular expression – Regular Languages- Equivalence of Finite Automata and regular expressions – Proving languages to be not regular (Pumping Lemma) – Closure properties of regular languages.
UNIT III CONTEXT FREE GRAMMAR AND PUSH DOWN AUTOMATA 9
Types of Grammar – Chomsky‘s hierarchy of languages -Context-Free Grammar (CFG) and Languages
– Derivations and Parse trees – Ambiguity in grammars and languages – Push Down Automata (PDA): Definition – Moves – Instantaneous descriptions -Languages of pushdown automata – Equivalence of pushdown automata and CFG-CFG to PDA-PDA to CFG – Deterministic Pushdown Automata.
UNIT IV NORMAL FORMS AND TURING MACHINES 9
Normal forms for CFG – Simplification of CFG- Chomsky Normal Form (CNF) and Greibach Normal Form (GNF) – Pumping lemma for CFL – Closure properties of Context Free Languages –Turing Machine : Basic model – definition and representation – Instantaneous Description – Language acceptance by TM – TM as Computer of Integer functions – Programming techniques for Turing machines (subroutines).
UNIT V UNDECIDABILITY 9
Unsolvable Problems and Computable Functions –PCP-MPCP- Recursive and recursively enumerable languages – Properties – Universal Turing machine -Tractable and Intractable problems – P and NP completeness – Kruskal’s algorithm – Travelling Salesman Problem- 3-CNF SAT problems.
At the end of this course, the students will be able to:
CO1: Construct automata theory using Finite Automata
CO2: Write regular expressions for any pattern
CO3: Design context free grammar and Pushdown Automata
CO4: Design Turing machine for computational functions
CO5: Differentiate between decidable and undecidable problems
- Hopcroft J.E., Motwani R. & Ullman J.D., “Introduction to Automata Theory, Languages and Computations”, 3rd Edition, Pearson Education, 2008.
- John C Martin , “Introduction to Languages and the Theory of Computation”, 4th Edition, Tata McGraw Hill, 2011.
- Harry R Lewis and Christos H Papadimitriou , “Elements of the Theory of Computation”, 2nd Edition, Prentice Hall of India, 2015.
- Peter Linz, “An Introduction to Formal Language and Automata”, 6th Edition, Jones & Bartlett, 2016.
- K.L.P.Mishra and N.Chandrasekaran, “Theory of Computer Science: Automata Languages and Computation”, 3rd Edition, Prentice Hall of India, 2006.
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