The welcome will take place in the large lecture theatre together with Institute Director Prof. Dr Konstantin Pankrashkin.

What does the sound of a drum have to do with computer algorithms for image recognition? The sound of a vibrating object depends on its shape.
How exactly is described by a mathematical equation, the "eigenvalue equation for the Laplace operator".
The solutions to the equation indicate the frequencies of the overtones, and these determine the tone colour.
For example, a vibrating string sounds different from a drum and a circular drum sounds different from an oval drum.
Investigating this equation leads to a wide variety of mathematical topics, from the sine function to prime numbers and chaotic dynamic billiard systems.
It is also the basis for fast algorithms in the field of image processing and artificial intelligence.
In the talk, I will explain the equation, its meaning and some of these multiple relationships.
Finally, I will also give the surprising answer to the title question (which has been an open problem for 35 years).

Prof. Dr. Daniel Grieser

A mathematical competition in teamwork for groups of 2-4 pupils. The best teams are honoured with certificates and prizes. The competition consists of tasks that challenge different mathematical skills, especially logical thinking and reasoning. The groups can pursue different solution strategies, e.g. solve the tasks together or divide them up among themselves. Calculators are allowed.

Why don't you try solving the following problem (from a previous competition): The planet Brick has the shape of a cuboid with edge lengths of 10 m, 20 m and 40 m and is completely covered with grass. A goat is pegged in the centre of one of the largest sides. What is the minimum length of the rope required for the goat to graze the entire planet?
(The shorter the justified rope length, the more points you get for this task).

Have you ever wondered how knots hold our wired world together?
Join us on a journey to explore the topic in more detail and maybe even learn how to save yourself the hassle of unknotting headphone cables.

M. Sc. Álvaro Sánchez Hernández

We have two former maths students and one former maths student from the University of Oldenburg as guests. All three are now firmly established in professional life and work for companies in the region. They will talk about their studies in retrospect and how they found their way into working life as maths graduates. Questions from the audience are welcome.

Prof Dr Marcus C. Christiansen

Here you can find the current menu of the canteen in Wechloy.

Even in ancient times, it was important - sometimes even decisive for war - to protect certain information from unauthorised reading. Today, in the age of the internet, everyone is hopefully aware of the importance of protecting their own data, especially passwords and account details. However, the methods of attack also change over time and with technical developments. In this lecture, we will take a historical and mathematical look at everything from ancient encryption methods to the challenges posed by quantum computers.

Prof Dr Anne Frühbis-Krüger

The best teams in the competition will also be honoured with certificates and prizes at the joint farewell ceremony in the main auditorium.

As the central contact point in the foyer, the information stand is run by the student body for mathematics. Here you can ask questions about the Day of Mathematics as well as about studying.