15.01.2025, 14:00 - 14:45
– Campus Golm, Building 9, Room 2.22 and via Zoom
Institutskolloquium
A solution to Ringel’s circle problem
Linda Kleist (Universität Potsdam)
In 1959, Ringel asked for the chromatic number of tangency graphs of a collection of circles in the plane in which no three circles have the same tangent point. Particularly, he wondered whether a...
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