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The University of Southampton

COMP2210 Theory of Computing

Module Overview

This module aims to provide a broad and stimulating introduction to the theory of computing

Aims and Objectives

Learning Outcomes

Knowledge and Understanding

Having successfully completed this module, you will be able to demonstrate knowledge and understanding of:

  • The relationship between the regular, context-free and recursively enumerable classes of languages, and the state-machines that accept them
  • The nature and examples of undecidable problems
  • The diagonalisation proof technique
  • The time and space complexity of algorithms and problems
  • The complexity classes P and NP together with examples of NP-complete problems
  • The complexity class PSPACE together with examples of PSPACE-complete problems
Subject Specific Intellectual and Research Skills

Having successfully completed this module you will be able to:

  • Ascertain and prove whether or not a given language is regular
  • Ascertain and prove whether or not a given language is context-free
  • Use the reduction technique to show that a problem is undecidable
  • Analyse the complexity of a given algorithm or problem
  • Use polynomial-time reduction to reason about the complexity class of a problem


Automata theory - Finite state automata, regular expressions and regular languages - The pumping lemma for regular languages - Closure properties of regular languages - Context-free grammars and pushdown automata - Closure properties of context-free languages - The pumping lemma for context-free languages Computability theory - Turing machines, recursively enumerable and recursive languages - Church-Turing thesis - Limitations of algorithms: universality, the halting problem and undecidability Computational complexity theory - Complexity of algorithms and of problems - Complexity classes P, NP, PSPACE - Polynomial-time reduction - NP-Completeness and Cook's theorem - PSPACE-Completeness

Learning and Teaching

Wider reading or practice41
Preparation for scheduled sessions18
Follow-up work18
Completion of assessment task15
Total study time154

Resources & Reading list

Jones ND (1997). Computability and Complexity. 

Gruska J (1996). Foundations of Computing. 

Harel D (1992). Algorithmics: The Spirit of Computing. 

Cohen D (1996). Introduction to Computer Theory. 

Dexter C. Kozen (1999). Automata and Computabilty. 

Hey AJG (1996). Feynman Lectures on Computation. 

Sipser M, (1997). Introduction to the Theory of Computation. 

Barwise J and Etchemendy J (1993). Turing's World. 

Hein J (2002). Discrete Structures, Logic, and Computability. 

Dewdney AK (2001). The (new) Turing Omnibus. 



MethodPercentage contribution
Examination  (1 hours) 30%
Test 70%


MethodPercentage contribution
Examination 100%


MethodPercentage contribution
Examination 100%

Repeat Information

Repeat type: Internal & External

Linked modules

Pre-requisites: COMP1215 and COMP1201

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