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PhD student profiles

Read about four of our current PhD students, and learn about why they chose the OU and what it's like to study here.

Mairi Walker

My name is Mairi Walker and I am a second year pure mathematics PhD student. My research connects various areas of mathematics including hyperbolic geometry, number theory and complex analysis.

What led to you doing mathematics research, and why The Open University?

Since I was a child I have been fascinated by the idea of research, so after my undergraduate degree at Warwick it seemed natural for me to apply for a PhD position. In my final year project at Warwick I studied Poincaré's theory of Fuchsian groups from both a historical and a modern perspective, and it was through this project that I first heard about the Open University mathematics and statistics department, as it has one of the strongest history of mathematics research groups in the UK. On visiting I discovered that the department has leading researchers in a wide variety of areas, and I became particularly interested in the research projects offered by my current supervisor Dr. Ian Short, and so I chose to apply here.

What's great about research at the Open University?

Doing research can be tough, but it is also hugely rewarding. Here at the OU there is a very good balance of supervision and independence; we get pushed, but are also well supported. The focus on both independent and collaborative research, as well as the chances we get to study taught courses, gives us a solid foundation on which to build a career in research. Our department is small, but it has a friendly and dynamic atmosphere, and the PhD students form a close-knit community. We are lucky enough to get a good budget for traveling to workshops and conferences, which gives us opportunities to present our research, learn about what's going on within our field, and meet both established mathematicians and other students. We also have plenty of opportunities for getting involved with media and outreach, as well as with teaching, meaning that research students are also equipped with skills needed to go into jobs outside of research.

David Bevan

My name is David Bevan, and I am studying enumerative combinatorics, particularly permutation classes.

What led to you doing mathematics research?

For twenty or so years before embarking on my PhD, I worked in software development. After reading Proofs from THE BOOK by Aigner and Ziegler in about 2002 (and noticing that one of the proofs wasn't optimal), I continued to investigate the problem (which eventually resulted in a paper) and also read lots of maths papers in my spare time. A few years later when I was becoming increasingly dissatisfied with my job, the discovery that I could be paid for three years to explore what had become my main 'hobby' was sufficient catalyst to seek to embark on a new career.

What's great about doing research?

Exploring the universe of mathematics, or "spending time in maths world", which is what I tell my family I'm doing when I'm lying on the sofa with my eyes shut, working hard! In my psyche, the experience is much like discovering strange new worlds and investigating unfamiliar landscapes (with apologies to Prof. Brian Cox). It is a challenging pursuit and can be very frustrating, with many dead ends and false summits, like trying to find a way to the top of a steep mountain, but I find that the satisfaction of making even a minor breakthrough is considerable.

Why did you choose the Open University?

With the Open University, the following coincided: The availability of a fully funded PhD studentship, the possibility of doing research in an area that interested me, and a location not too far from where I live. The OU also has lots of experience with 'more mature' students like myself. One thing that characterises the department is how friendly and approachable people are; there is not the big divide between lecturers and research students here that is present in some other places.

What do you think your future holds as a mathematician?

I would love to be able to spend the rest of my working life doing mathematical research in a university setting.

What advice would you give to potential research students in mathematics and statistics?

Read lots of mathematics papers. This is now very easy with the arXiv. Learn how to get the gist of an article without needing to take in all the detail. Try to solve (hard) problems, and keep trying. If you don't enjoy that, you won't enjoy research. Find out what sort of mathematics enthuses you and is likely to keep your interest for several years.

David Martí Pete

My name is David Martí Pete and I do research on transcendental complex dynamics, which means that I study the iteration of holomorphic functions that have some essential singularity. This is a particular kind of discrete dynamical system, and the main goal of this area is to understand the dynamics of models of evolution processes which may occur in nature.

What led to you doing mathematics research?

As far as I can remember I have always enjoyed doing mathematics. I believe that this is because I encountered some very good maths teachers in my high school. So when it came to the decision of choosing an undergraduate degree it was clear to me that this was what I wanted to do, and as time went by it became more and more obvious that I liked doing this.

What's great about doing research?

I like doing research because it is quite challenging. Every week you have a set of small problems to deal with and if you succeed then you are led to more questions! Also you often have the opportunity to go to conferences abroad and meet people from very different places and backgrounds.

Why did you choose the Open University?

The main reason why I came here is that there is a very strong team working on transcendental dynamics. I had met my current supervisors before and they have a very good relationship with my master's supervisor in Barcelona. Once I arrived here I discovered that the department has a very good atmosphere and everyone is very welcoming and friendly.

What skills have you picked up so far, and what you think your future holds as a mathematician?

The Open University holds a series of doctoral training workshops to make sure that you get not only the subject knowledge but a wide range of skills which includes career development, communication methods, time management, etc. On the other hand, my supervisors always encourage me to do talks in conferences and support me if I want to do other kind of academic activities like joining a teaching organisation as the UKMT which I did recently.

What advice would you give to potential research students in mathematics and statistics?

For me it is sort of important to be in a research group that has more people working on the same area to which you can speak and discuss about what you are studying. In my department there are a couple of other PhD students, a post-doc, and my two supervisors working on transcendental dynamics and we have a weekly meeting plus some seminar talks.

Rosie Cretney

My name is Rosie Cretney, and I am studying the history of mathematics. My thesis will be about some aspects of the contributions of the Swiss mathematician Leonhard Euler to the mathematical theory of ship-building.

What attracted you to the history of mathematics?

At school my favourite subject was maths, but I was also quite interested in the humanities. During my undergraduate degree in maths, I took a third-year course in the history of maths, and enjoyed all the new perspectives it gave me on the maths I'd been studying. In particular, it gave maths a human side that is often lost or suppressed in modern presentations of the subject: how did past mathematicians come up with their ideas, and why did the maths develop in the way that it did?

I didn't want to stop after studying that third-year course, so between the third and fourth years of my degree, I did a summer research project (funded by an Undergraduate Research Bursary awarded by the Nuffield Foundation; this scheme is now administered and funded by the London Mathematical Society). After ten weeks of puzzling over a problem that hadn't been fully explored in the literature, I finally made a breakthrough, and the buzz of that got me hooked on research. I then did a fourth-year dissertation in the history of maths, and applied to do a PhD in the subject.

Why did you choose the Open University?

The OU was recommended to me by my dissertation supervisor, as it has one of the UK's strongest research groups in the history of maths.

What's great about doing research?

One of my favourite aspects of research is the diversity of approaches and sources that I need to use in my work. One day I might be building an interactive visualisation to better understand a dataset; the next, I might be visiting an archive and trying to make sense of scribbled calculations in a 400-year-old notebook. I'm also very lucky in that thanks to OU funding and international contacts made through my supervisors, I've been able to travel to lots of conferences and meet new people.

What skills have you picked up so far, and what you think your future holds as a historian of mathematics?

As my field is interdisciplinary and draws upon a whole host of other fields, there are lots of skills that I didn't really need during my undergraduate degree, but which I've needed to pick up for my research. To cite a few examples, I've had to brush up on my foreign language skills, learn how to approach rare books and archive material, and learn some basic Python programming. A fellow OU PhD student and I also co-organised an international conference for PhD students and early-career researchers in history of maths. This taught us a lot, and I found it a valuable experience for what I hope will be a future career in research.

What advice would you give to potential research students in the history of mathematics?

If you are thinking about applying to do a research degree in the history of mathematics, do some reading around the subject first. Find a specific problem, a mathematician, or time period that particularly interests you, and use that as a starting point for your research proposal. If you are looking a short, accessible introduction to what historians of maths spend their time thinking about, I can recommend Benjamin Wardhaugh's How to read historical mathematics (Princeton, 2010), and Jacqueline Stedall's The history of mathematics: a very short introduction (Oxford, 2012). You could also look at A concise history of mathematics by Dirk J. Struik (Dover Publications, fourth revised edition 1987) for a brief overview of the history of maths written in a more traditional style.

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