Women of Mathematics: Elena Resmerita

Country: Romania

Affiliation: Universität Klagenfurt, Austria

Field of Research: inverse problems (regularisation methods, image reconstruction theory and continuous optimisation)

 

 

1.) Why did you choose this formula?

This relates to the proximal point method, an optimisation technique introduced in 1962. The method has generated a number of efficient algorithms for inverse problems, for instance in signal and image reconstruction. About 15 years ago, I thought it was getting old and people would lose interest in it, but I’m happy that recent developments in applied mathematics have shown the contrary: it will continue to be a powerful tool in solving complex mathematical problems.

 

2.) What made you decide to study Mathematics?

Initially I wanted to study medicine, but I found it difficult to learn all of the biology needed for the entrance exam. However, I realised that the entrance exams for mathematics would be relatively easy for me. This, together with my passion for teaching (I used to give my friends, neighbours and other children private lessons) made me choose mathematics.

 

3.) What do you like so much about Mathematics?

In mathematics everyone is happy when a problem can be solved in some way, and even happier when there are several ways to solve it. If a solution cannot be found, we come across new problems when trying to approach the original problem, and these are sometimes more important than the problem we started with. So we keep on trying to solve problems…

 

4.) How does Mathematics influence our lives on a daily basis?

On a personal level, mathematics helps us to develop very structured thinking, whether it’s about efficiently planning your holiday or taking important decisions in life. On a global level, it provides a basis for all natural sciences: physics, chemistry, engineering, biology, and so on.

 

5.) Have you experienced a special Mathematics moment?

After finishing my PhD studies in Israel, I started to learn about another field of mathematics in Linz, Austria. I remember the sense of achievement I felt when I successfully published a paper of my own in this new field – incidentally, that has been my most successful publication so far.

 

6.) What advice would you give future mathematicians to help them on their way?

A career in mathematics has the same requirements for success as any other field. You have to enjoy the subject and feel comfortable working with it, but you also need to be committed and see the work through.

 

Women of Mathematics: Barbara Kaltenbacher

Country: Austria

Affiliation: Universität Klagenfurt, Austria

Field of Research: inverse problems, regularization methods, parameter identification in partial differential equations, optimization with PDE constraints, direct and inverse problems in piezoelectricity and magnetics, nonlinear acoustics

 

 

1.) Why did you choose this formula?

Because it is a formula I am working with at the moment. It describes the nonlinear propagation of high-intensity focused ultrasound, as can be seen when it is used to disintegrate kidney stones, for example. This model is what is known as a partial differential equation, which involves various physical parameters. I am currently looking into how the solution of this equation changes as the tau parameter (relaxation time) approaches zero.

 

2.) What made you decide to study Mathematics?

I always enjoyed studying Mathematics at school – and I definitely have my high-school teacher to largely thank for that as she helped and encouraged us a great deal. I wasn’t your typical maths geek, though! I was interested in a lot of other things at school and I had to work really hard when I first started studying. It only really all clicked into place properly after the first few semesters.

 

3.) What do you like so much about Mathematics?

I like the fact that there are definitive answers in the sense that a mathematical statement can only be true or false and a mathematical proof is absolutely watertight and cannot be disputed (provided that it is correct in the first place, of course). On the other hand, it can be extremely hard work to get to that stage and proofs have been known to haunt my dreams at times.

You’ve also got the chance to work with people from all around the world – and they are basically always like-minded people who are just as fascinated by Mathematics. There are also plenty of exciting fields of application, meaning that there is more or less always chance to learn something new.

 

4.) How does Mathematics influence our lives on a daily basis?

There are so many applications within my own field of research alone, including all medical imaging processes, which simply couldn’t exist without advanced mathematical algorithms. In actual fact, Mathematics is at the heart of all modern technology, ranging from algorithms used to process signals in telecommunications to the control systems for industrial facilities. It is often the case that mathematical tools are based on results from pure basic research, for which no real-life applications were considered when they first came about. And, of course, the process of actually applying them often requires close collaboration with colleagues from the fields of Engineering, Medicine, Business and so on. But there’s still lots of work to be done on pure basic research within Mathematics too.

 

5.) Have you experienced a special Mathematics moment?

Special moments happen all the time when the basic idea behind a proof comes to me or once I have added the final little part of the puzzle to finish it off. There are special moments like this in teaching too, such as when I realise that the students are taking on board and truly understanding what I am trying to tell them about.

 

6.) What advice would you give future mathematicians to help them on their way?

At the end of the day, Mathematics is a gender-neutral science – both in terms of the content covered and the ways of working. That makes it all the more crazy that there are still fewer female mathematicians than male ones. It’s certainly a positive and natural development that this difference in numbers is decreasing with every generation. But we need to reach a balance much more quickly. There are still girls and young women who simply don’t have enough confidence in themselves when it comes to Mathematics – and that comes across first when they are choosing what to study and then later on when they need to assert their position within the academic world. We are still sadly seeing way too many talented candidates slip through the net as a result.

Women of Mathematics: Angelika Wiegele

Country: Austria

Affiliation: Universität Klagenfurt, Austria

Field of Research: combinatorial optimization, semidefinite programming, nonlinear optimization

 

 

1.) Why did you choose this formula?

What you see is a semidefinite program, which can be used to approximate many hard discrete problems. However, solving it is still challenging and that’s what I am working on.

 

2.) What made you decide to study Mathematics?

It was just the way things turned out.

 

3.) What do you like so much about Mathematics?

The clear and concise language. Also, I like the fact that you work on something and you think about it over and over again, try things out in several ways, and suddenly you get the idea or understand it; and then everything seems to become clear, and it’s done.

 

4.) How does Mathematics influence our lives on a daily basis?

Mathematics influences our life to the extent that many things in our modern world would not exist without it. For example, without mathematics, our mobile phones wouldn’t work.

 

5.) Have you experienced a special Mathematics moment?

Not that I‘m aware of 😉

 

6.) What advice would you give future mathematicians to help them on their way?

Be patient and increase your tolerance for frustration.

 

 

Die Delegation der AAU beim European Women in Mathematics General Meeting 2018

Die European Women in Mathematics Association (EWM) hat vom 3. bis 7. September 2018 ihre Mitgliederversammlung am Institut für Mathematik der Karl-Franzens-Universität Graz abgehalten und das 30-jährige Bestehen gefeiert. In der von Elena Resmerita (Institut für Mathematics der AAU) mitorganisierten Konferenz wurden Elena Resmerita, als Vize-Obfrau des EWM-Verbandes, und Carola Schönlieb (Cambridge University), als Obfrau des EWM-Verbandes, für den Zeitraum 2018-2020 wiedergewählt. Mehr als hundert Mathematikerinnen aus ganz Europa trafen sich zu exzellenten wissenschaftlichen Vorträgen, Minisymposien und Poster-Präsentationen, Diskussionen und Networking:

https://sites.google.com/site/ewmgm18/