I'm out of my depth here but this from Larry Guth seems cool as heck (pdf): "Metaphors in systolic geometry" http://math.mit.edu/%7Elguth/Exposition/icmguth.pdf
there's a video lecture to go with it: https://www.youtube.com/watch?v=nTqg7ruXW5E
A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.
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