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Monthly Archives: October 2012
Just for fun: genus 2 madness in Bonn
Real life model of the Lsurface, realised by Mark Pedron with the help of Dawid Kielak. Yeah, too much light, I know… Clearer one: Explanation on the blackboard: The cone point. Behold the negative curvature!
Posted in Just for fun
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BI: Finite decomposition complexity (is preserved by relative hyperbolicity)
In this post I’ll define finite decomposition complexity (FDC) for you, tell you what it’s good for (Stable Borel Conjecture!) and point out that an argument by Osin shows that it is preserved by relative hyperbolicity. First, the motivation. Here … Continue reading