### What’s hot at mathoverflow 18/17

Open subsets of Euclidean space in dimension 5 and higher admitting exotic smooth structures

SPP 2026 - Geometry at Infinity

Open subsets of Euclidean space in dimension 5 and higher admitting exotic smooth structures

This week there was the workshop “Non-positively curved groups and spaces” in Regensburg.

This week there was the common meeting of the Austrian and German mathematical societies at the University of Salzburg and besides many interesting math talks there was also a session about the future of knowledge management.

3D Billiards problem inside a torus

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