Spectral Theory

Cod y Modiwl: MAM8020
Teitl y Modiwl: Spectral Theory
Blwyddyn Academaidd: 2026/2027
Semester: Semester 2
Cyd-gysylltydd y Modiwl: Dr Robert Douglas
Rhestr Ddarllen: Gweld ar Aspire
Rhagofynion: MA30210 neu MT30210
Anghymharus (Unrhyw Flwyddyn Acad): MA38010
Staff Eraill sy'n Cyfrannu: Dr Gwion Evans; Dr Robert Douglas; Dr Rolf Gohm

Dulliau Asesu

Math o Asesiad	Manylion Asesiad	Hyd Asesiad	Cyfran
Arholiad Semester	Written Examination:	2 Awr	100%
Asesiad Ailsefyll	Written Examination:	2 Awr	100%

Canlyniadau Dysgu

Wedi cwblhau'r modiwl dylai'r myfyrwyr fedru:

Demonstrate knowledge of examples of Hilbert spaces and inner products
Make use of orthogonality relations to manipulate inner products
Expand elements of a Hilbert space in terms of an orthonormal basis
Determine the norm of bounded linear operators
Determine adjoints of operators and check for selfadjointness and compactness
Define the spectrum and resolvent set
Describe spectrum of compact and selfadjoint operators
Demonstrate a knowledge of advanced developments/applications of Spectral Theory

Disgrifiad cryno

Spectral theory deals with solvability of equations of the form (T-z)x=y, where T is a linear, but not necessarily bounded operator on a Banach or Hilbert space and z is a complex number. This module aims to introduce the basic concepts needed from Hilbert space theory and the theory of linear operators and give some first results on the spectrum of operators. Students will be expected to study more advanced topics via mini-courses.

Nod

Spectral Theory is one of the main current areas of research in mathematical analysis with applications in many sciences, in particular quantum mechanics. It underpins much of the modern theory of solutions of partial differential equations: essential concepts are introduced for any student seeking a deeper understanding of mathematical analysis and its applications.

Cynnwys

Introduction to Hilbert spaces: inner products, orthogonality, orthogonal complements, orthonormal systems, basis of a Hilbert space, examples
Linear operators on Hilbert spaces: bounded and unbounded operators, adjoint operators, selfadjoint operators, compact operators, examples
Spectral theory: spectrum, resolvent, Neumann series, spectral radius for bounded operators, spectrum of compact operators, spectrum of selfadjoint operators, the spectral theorem for compact selfadjoint operators, examples
Topics for mini-courses include:
Fourier series: conditions for convergence, Dirichlet kernel, Fejer kernel, Gibbs? phenomenon
Hilbert-Schmidt operators: Hilbert-Schmidt norm, functional calculus, trace of an operator
Integral operators: Fredholm operators, Fredholm alternative, Volterra operators
Banach spaces: duality, reflexivity, functionals
Lax-Milgram Lemma: Riesz representation theorem, forms, Lax-Milgram, applications

Sgiliau Modiwl

Math o Sgiliau	Manylion Sgiliau
Cyfathrebu	Written answers to exercises must be clear and well-structured. Project will help students develop presentation skills.
Datblygu personol a chynllunio gyrfa	Completion of tasks (assignments and presentation) to set deadlines will aid personal development. The course will give indications of whether a student wants to further pursue mathematical analysis and its applications.
Datrys Problemau	The assignments will give the students opportunities to show creativity in finding solutions and develop their problem solving skills.
Gwaith Tim	Students will be encouraged to work on problems in groups during exercise classes.
Gwella dysgu a pherfformiad ei hun	Students are expected to develop their own approach to time-management regarding completion of assignments and projects on time and preparation between lectures.
Rhifedd	Required throughout the course
Sgiliau pwnc penodol	Broadens exposure of student to topics in mathematics
Sgiliau ymchwil	The project will make the students independently research a mathematical topic.
Technoleg Gwybodaeth	Students will be encouraged to research topics on the internet and can use technology in their presentation

Nodau

Mae'r modiwl hwn yn cydymffurfio a FfCChC Lefel 7