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Department of Mathematics & Statistics

MATH4A2 Techniques in Applied Mathematics 2

Second Semester
10 points

This paper is an introduction to techniques for solving problems in applied mathematics. The focus of MATH4A2 will be on understanding the behavior of systems of equations. In many realistic applications, there are more than one dependent variables, and in this paper we will focus on techniques for studying systems of ordinary or partial differential equations. For systems of ordinary differential equations this will involve a study of dynamical systems and nonlinear dynamics, while we will also touch on chaos theory. Networks are becoming of increasing importance in applied mathematics, and we will outline some of the basic topics in network science, and then study dynamical systems which evolve over networks. We will also touch on the topic of stochastic differential equations. Returning to partial differential equations, we will discuss how to solve systems of partial differential equations. We will also describe how such systems may result in pattern formation, or even turbulence.


MATH4A1, or permission of the lecturer.


I. Systems of differential equations; discrete versus continuous time dynamical systems, steady states and linear stability analysis; dynamical systems arising in real-world applications; Saddle-node bifurcation

II. Planar dynamics; phase plane analysis; Hopf bifurcation; limit cycles; autonomous versus non-autonomous dynamics

III. Nonlinear dynamics and chaos; routes for finding chaos; constructing a chaotic dynamical system

IV. A brief introduction to network science; dynamics on networks; temporal networks

V. Stochastic differential equations; stochastic versus chaotic; applications and numerical solutions

VI. Systems of partial differential equations; applications in fluids, physics, and biology; common solution methods

VII. Nonlinear waves; solitons

VIII. Pattern formation; Turing instability; Benjamin-Feir instability; numerical simulation of patterns

IX. Turbulence; fascinating open problems and areas for future research


Dr R. A. Van Gorder

You will be responsible for all material covered in lecture, but no other references are needed. I may provide additional optional references for specific topics, as appropriate.


Assessment will be through assignments only. These will be take-home problem sets.

Final mark

Your final mark F in the paper will be calculated according to this formula:

F = A


and all quantities are expressed as percentages.

Students must abide by the University’s Academic Integrity Policy

Academic integrity means being honest in your studying and assessments. It is the basis for ethical decision-making and behaviour in an academic context. Academic integrity is informed by the values of honesty, trust, responsibility, fairness, respect and courage.

Academic misconduct is seeking to gain for yourself, or assisting another person to gain, an academic advantage by deception or other unfair means. The most common form of academic misconduct is plagiarism.

Academic misconduct in relation to work submitted for assessment (including all course work, tests and examinations) is taken very seriously at the University of Otago.

All students have a responsibility to understand the requirements that apply to particular assessments and also to be aware of acceptable academic practice regarding the use of material prepared by others. Therefore it is important to be familiar with the rules surrounding academic misconduct at the University of Otago; they may be different from the rules in your previous place of study.

Any student involved in academic misconduct, whether intentional or arising through failure to take reasonable care, will be subject to the University’s Student Academic Misconduct Procedures which contain a range of penalties.

If you are ever in doubt concerning what may be acceptable academic practice in relation to assessment, you should clarify the situation with your lecturer before submitting the work or taking the test or examination involved.

Types of academic misconduct are as follows:


The University makes a distinction between unintentional plagiarism (Level One) and intentional plagiarism (Level Two).

  • Although not intended, unintentional plagiarism is covered by the Student Academic Misconduct Procedures. It is usually due to lack of care, naivety, and/or to a lack to understanding of acceptable academic behaviour. This kind of plagiarism can be easily avoided.
  • Intentional plagiarism is gaining academic advantage by copying or paraphrasing someone elses work and presenting it as your own, or helping someone else copy your work and present it as their own. It also includes self-plagiarism which is when you use your own work in a different paper or programme without indicating the source. Intentional plagiarism is treated very seriously by the University.

Unauthorised Collaboration

Unauthorised Collaboration occurs when you work with, or share work with, others on an assessment which is designed as a task for individuals and in which individual answers are required. This form does not include assessment tasks where students are required or permitted to present their results as collaborative work. Nor does it preclude collaborative effort in research or study for assignments, tests or examinations; but unless it is explicitly stated otherwise, each students answers should be in their own words. If you are not sure if collaboration is allowed, check with your lecturer..


Impersonation is getting someone else to participate in any assessment on your behalf, including having someone else sit any test or examination on your behalf.


Falsification is to falsify the results of your research; presenting as true or accurate material that you know to be false or inaccurate.

Use of Unauthorised Materials

Unless expressly permitted, notes, books, calculators, computers or any other material and equipment are not permitted into a test or examination. Make sure you read the examination rules carefully. If you are still not sure what you are allowed to take in, check with your lecturer.

Assisting Others to Commit Academic Misconduct

This includes impersonating another student in a test or examination; writing an assignment for another student; giving answers to another student in a test or examination by any direct or indirect means; and allowing another student to copy answers in a test, examination or any other assessment.

Further information

While we strive to keep details as accurate and up-to-date as possible, information given here should be regarded as provisional. Individual lecturers will confirm teaching and assessment methods.