New blog post: Dancing arc-quadrilaterals, 11011110.github.io/blog/2019/0

In which an analogy to Matisse's ring of abstracted dancing figures lets me prove the nonexistence of Lombardi-style graph drawings for certain bipartite planar graphs and series-parallel graphs.

A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.

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