Functional Analysis 3
The unit aims to provide students with a firm grounding in the theory and techniques of functional analysis and to offer students ample opportunity to build on their problem-solving ability in this area.
This unit sets out to explore some core notions in functional analysis. Functional analysis originated partly in the study of integral equations. It forms the basis of the theory of operators acting in infinite dimensional spaces. It is helpful in analysing trigonometric series and can be used to make sense of the determinant of an infinite-dimensional matrix. It has found broad applicability in diverse areas of mathematics (for example, spectral theory). Students will be introduced to the theory of Banach and Hilbert spaces. This will be followed by an exposition of four fundamental theorems relating to Banach spaces (Hahn-Banach theorem, uniform bounded-ness theorem, open mapping theorem, closed graph theorem). The unit may also include some discussion of the spectral theory of linear operators.
Relation to other units
This is a Level 6 version of the Level 7 unit Functional Analysis 34, and students may not take both units.
By the end of the unit, students will
- understand basic concepts and results in functional analysis;
- be able to solve routine problems;
- have developed skills in applying the techniques of the course to unseen situations.
Deductive thinking; problem-solving; mathematical exposition
Banach spaces: bounded linear operators; bounded linear functionals; dual space
Hilbert spaces: orthogonal complement; total orthonormal sets; representation of functionals on a Hilbert space; Hilbert adjoint operator; self-adjoint, unitary and normal operators
Fundamental Theorems for normed and Banch spaces: Zorn's Lemma; Hahn-Banach Theorem; Category Theorem; Uniform Boundedness Theorem; strong and weak convergence; convergence of sequences of operators; Open Mapping Theorem; Closed Graph Theorem
Reading and References
The course will follow portions of the text Kreyszig, E., Introductory Functional Analysis with Applications, John Wiley & Sons (1989).
The following books may also be useful,
W. Rudin, Functional Analysis
N. Young, An Introduction to Hilbert Space
Unit code: MATH36202
Level of study: H/6
Credit points: 20
Teaching block (weeks): 2 (13-24)
Lecturer: Dr Asma Hassanhezhad
MATH20006 Metric Spaces
Methods of teaching
Lectures and recommended problems.
Methods of Assessment
The pass mark for this unit is 40.
The final mark is calculated as follows:
- 90% Exam
- 10% from selected homework questions
NOTE: Calculators are NOT allowed in the examinition.
For information resit arrangements, please see the re-sit page on the intranet.
Further exam information can be found on the Maths Intranet.