Please note that this module can be taken by 4th year students as a 10 credit module with the module code 0540533.
The aim of the module is to introduce students to a variety of special functions using integral representations and linear differential equations as the main technique.
At the end of the module you should be able to:
- use the general properties of Gamma and Beta functions;
- use methods of studying asymptotic behaviour of functions;
- solve linear differential equations by power series;
- solve linear differential equations by Laplace method;
- use general properties of hypergeometric equation and its solutions;
- use classical orthogonal polynomials
- Gamma and Beta functions
- Infinite products
- Asymptotic expansions, method of steepest descent;
- Power series solutions to second-order linear differential equations; singular points and the Frobenius series.
- Hypergeometric equation, properties of its solutions, integral representation for the solutions.
- Confluent hypergeometric equation.
- Hypergeometric polynomials. Classical orthogonal polynomials.
- G F Simmons, Differential Equations, with Applications and Historical Notes, Tata MacGraw-Hill (paperback) (S7.38 SIM)
- E T Whittaker and G N Watson, A Course of Modern Analysis, Cambridge University Press
4 lectures per week from weeks 2-7.
Two hour unseen examination towards the end of the Summer Term (100%),
This module aims to explore the realm beyond the elementary functions domain. We shall study functions defined by integrals which can not be expressed in terms of elementary functions, such as the celebrated Gamma function. We shall study their properties by means of the complex analysis and differential equations.
Please check prerequisites carefully before asking to take this module as an elective.