Course syllabus

# Olinjära dynamiska system

Nonlinear Dynamical Systems

## FMAN15, 7,5 credits, A (Second Cycle)

## General Information

## Aim

## Learning outcomes

## Contents

## Examination details

## Admission

## Reading list

## Contact and other information

Nonlinear Dynamical Systems

Valid for: 2023/24

Faculty: Faculty of Engineering, LTH

Decided by: PLED F/Pi

Date of Decision: 2023-04-18

Elective for: D4, F4, F4-bs, F4-bm, Pi4-bs, Pi4-ssr, Pi4-biek, MMSR2

Language of instruction: The course will be given in English

To give knowledge of and familiarity with concepts and methods from the theory of dynamical systems which are important in applications within almost all subjects in science and technology. In addition, the course should develop the student's general ability to assimilate and communicate mathematical theory, to express problems from science and technology in mathematical terms and to solve problems using the theory of dynamical systems.

Knowledge and understanding

For a passing grade the student must

- independently be able to explain different methods to describe, qualitatively or quantitatively, the solution sets of ordinary differential and difference equations.
- be able to explain basic bifurcation theory and its relevance in technological contexts.
- be able to explain the mathematical meaning of the concept
*chaotic behaviour*and its relevance in technological contexts.

Competences and skills

For a passing grade the student must

- be able to choose and use methods appropriate to describe, qualitatively and quantitatively, the solution sets of ordinary differential and difference equations.
- be able to use bifurcation theory to qualitatively describe how dynamical systems taken from applications in science and technology depend on a parameter.
- be able independently to identify and describe
*chaotic behaviour*in examples taken from the applications. - be able to write Matlab or Maple programs to solve mathematical problems within the framework of the course.
- in writing and orally, with clear logic and proper terminology, be able to explain the solution to a mathematical problem within the course.
- with access to the resources of a library, be able to independently assimilate and summarize the contents of a text in technology in which methods and results from the theory of dynamical systems are used.

Dynamical systems in discrete and continuous time. The fixed point theorem and Picard's theorem on the existence and uniqueness of solutions to ordinary differential equations. Phase space analysis and Poincaré's geometrical methods. Local stability theory (Liapunov's method and Hartman-Grobman's theorem). The central manifold theorem. Basic local bifurcation theory. Global bifurcations and transition to chaos. Chaotic and strange attractors (dynamics, combinatorial description).

Grading scale: TH - (U,3,4,5) - (Fail, Three, Four, Five)

Assessment: Written and/or oral test, to be decided by the examiner. Some written assignments to be completed before the exam.

The examiner, in consultation with Disability Support Services, may deviate from the regular form of examination in order to provide a permanently disabled student with a form of examination equivalent to that of a student without a disability.

Assumed prior knowledge: FMAF05 Systems and Transforms or FMAF10 Applied Mathematics - Linear Systems.

The number of participants is limited to: No

The course overlaps following course/s: FMA140, FMA141

- Natiello, M & Schmeling, J: Lecture notes in Nonlinear Dynamics. Matematikcentrum, 2021. Available for download.
- Solari, H.G., Natiello M.A. & Mindlin, G.B: Nonlinear dynamics, A two-way trip from physics to mathematics. Taylor & Francis, 1996, ISBN: 0750303808. Supplementary reading.

Course coordinator: Anders Holst, studierektor@math.lth.se

Course administrator: Studerandeexpeditionen, expedition@math.lth.se

Teacher: Jörg Schmeling, Jorg.Schmeling@math.lth.se

Course homepage: https://canvas.education.lu.se/courses/20385