We call a non-discrete Euclidean building a Bruhat-Tits space if its automorphism group contains a subgroup that induces the subgroup generated by all the root groups of a root datum of the building ...

Reintroduction : View from the twenty-first century -- Augmenting a 1983 history of the fourth dimension in culture and art (1900-1950) : X-rays and ether physics as the context for the "fourth ...

Some convex subsets of Euclidean buildings. 17:00 - 17:50 Ralf Köhl (Gießen) Local-to-global results for topological twin buildings. On the isometry group of the Urysohn space. 10:00 - 10:30 Guntram ...

Virtual reality can take you to some far-out places — mountaintops, distant cities and even fantastical game worlds. A team of artists and mathematicians is now adding to that list: universes where ...