Ten years ago the first Polymath project was launched (link to the original proposal of Timothy Gowers). Polymath can be described as massively collaborative mathematics, i.e., a large groups of mathematicians works on a predefined problem and each member posts his or her (partial) ideas, so that the collective makes progress from each small step … Continue reading "Ten Years of Polymath"
Are student evaluations biased by gender? No, say the authors of this article on slate.com, but instead they are biased by hotness: link.
Do quasi-isometries between groups always arise from actions on a common model space? Previous counterexamples invoked central extensions of lattices, e.g., of surface groups. A new construction of infinitely many classes is now using amalgams of surface groups. Stark, Woodhouse: Quasi-isometric groups with no common model geometry, https://arxiv.org/pdf/1711.05026.pdf If a group \(\Gamma\) acts geometrically (i.e., … Continue reading "What’s new on the ArXiv: Quasi-isometric groups with no common model geometry"
This blog will eventually be integrated into the website of the DFG priority programme “Geometry at Infinity“. It will discuss all kind of things that might be of potential interest to the users of that website. If you’d like to contribute some shorter or longer article, just send it unformatted or formatted to the e-mail … Continue reading "First blog post"