The quirky rules of topology, a field of math, could help us understand everything from big data to quantum computing. Imagine waking up in a Salvador Dalí painting. You reach over to hit the snooze ...
Michael Freedman’s momentous 1981 proof of the four-dimensional Poincaré conjecture was on the verge of being lost. The editors of a new book are trying to save it. One of the most important pieces of ...
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