Geometry Dynamics Heidelberg

The preparations for our HEGL Christmas activity this year are complete. Can you guess what we're going to do?

Three images showing the collection of objects brought from the Geometry Lab to the Heidelberg Laureate Forum. These include many 3D prints of interesting geometries, but also games based on geometry and maths.

Currently the Heidelberg Laureate Forum #HLF @hlforum.bsky.social is taking place in our city. We went there to show off the lovely objects we have at the Geometry Lab. People at HLF really enjoyed playing around with them.

Nach zwei Tagen voller interessanter Vorträge und Workshops sind heute das HEGL, Springer, die MAINS und das Heidelberg Laureate Forum mit spannenden Angeboten bei der #StuKon25 dabei.

hegl.mathi.uni-heidelberg.de

www.springer.com/de

www.heidelberg-mains.org

www.heidelberg-laureate-forum.org

Light shining through a model to reveal a regular pattern on the table. This is exactly how the stereographic projection works.

The stereographic projection is an old mapping from the sphere to the plane. The image shows a sphere with a distorted pattern on it. Using light the regular pattern is revealed. This is exactly the way the mapping works. The model is available: www.thingiverse.com/thing:5072032
#math #geometry

Collage of four images, two showing participants at the geometry lab, two showing Einstein tiles cut with a laser from wood.

Recently, we held a workshop on 3D printing and laser cutting at HEGL. We had a great time with everyone who attended and are incredibly happy that some even left the workshop with 3D prints and laser cuttings created by them. Thank you to everyone who participated! #math

Am 2. Juli um 17 Uhr kommt Prof. Albrecht Beutelspacher vom Mathematikum Gießen für “Mathematische Experimente“ zu uns. Kommt vorbei und staunt!

Pictures of a worksheet intended for school students.

How can we fairly share a cake? And how can we use this question to teach students mathematics?
You can find answers to both questions in a recent HEGL blog post about a student seminar that was focused on creating materials for school use.
hegl.mathi.uni-heidelberg.de/unterrichtsv...

Das Poster der StuKon25 mit dem QR-Code zur Webseite und der Anmeldung. Deadline ist der 1.6.25.

Die StuKon2025, die Studierenden- und Absolvent*innen-Konferenz für Mathe, findet vom 28. - 30.7 in Heidelberg statt. Trefft Studierende aus ganz Deutschland, lernt über ihre Abschlssarbeiten oder stellt eure eigene Arbeit vor und erfahrt in spannenden Workshops, was nach dem Studium kommen könnte.

Das Poster der StuKon25 mit dem QR-Code zur Webseite und der Anmeldung. Deadline ist der 1.6.25.

Die StuKon2025, die Studierenden- und Absolvent*innen-Konferenz für Mathe, findet vom 28. - 30.7 in Heidelberg statt. Trefft Studierende aus ganz Deutschland, lernt über ihre Abschlssarbeiten oder stellt eure eigene Arbeit vor und erfahrt in spannenden Workshops, was nach dem Studium kommen könnte.

Are you curious about 3D printing & laser cutting? Then join us in the HEGL 3D Printing and Laser Cutting Workshop. See how these tools can turn your research into real objects and get the chance to create and print your models. No prior knowledge needed!
hegl.mathi.uni-heidelberg.de/registration...

Schematic visualization of a graph occurring in Braess's Paradox. This can be used to show why travel times might decrease with road closures.

In 1990, 42nd Street in New York City was closed. Counterintuitively, traffic improved as a result. This phenomenon can be explained by Braess’s Paradox. In his blog post Luca M. Tittel explores Braess's Paradox and explains why it occurs.
hegl.mathi.uni-heidelberg.de/braesss-para...
#geometry #math

Picture of a 3D-printed Fano Plane

The game Dobble/Spot It! has an interpretation within projective geometry. The game with 7 different symbols then corresponds to the Fano-Plane. A model for this can be seen in the picture above, and is also available for you to print yourself: www.thingiverse.com/thing:5210739
#math #geometry

What is a mathematical proof, and how can we represent it?
This was tackled in a student seminar at HEGL by working with Lean, a proof assistant used to create and verify proofs. In their blog post (tinyurl.com/4hdm2x25) you can find more details on Lean and Constructive Algebra.
#maths #geometry

For the faculty's "Day of Mathematics" we offered a workshop on the projective geometry behind the game Dobble/Spot It! and how to build your own version of the game. It was great fun taking part.
See tinyurl.com/5caxtzj9 to find out more about our workshops.
#math #outreach #geometry

Today are the final presentations of this year’s HEGL students seminar about „A prototype for a Heidelberg Lean game“.

Join us (14:15 in SR 3) and learn how one can use formal proofs and computer programs to create mathematical games.

More about the Seminar:
matematiflo.github.io/HEGL_IMS_WiS...

Manon Bischoff during her talk explaining characteristics of different communcation formats

Assembling a Bascetta Star with 270 units

Our Einstein-island

The Fano plane made out of a self-made Dobble game with 3 symbols per card

A first glimpse into our outreach activities over the last two months:

…a workshop about the game Dobble (Spot it) and projective geometry

… our HEGL Winter activity: Einstein tiling and folding Bascetta stars

… HEGL Community Seminar by
@manonym025.bsky.social about communicating math

Hello 👋 We are now here too! We do research in the field of geometry and dynamics, exchange ideas with other sciences and organise several activities to communicate math to a wide audience. Here we want to report about all this. 😀

You can also find us on mathstodon @Geometry_Dynamics_Heidelberg