Mathematicians regard the Collatz conjecture as a quagmire and warn each other to stay away. But now Terence Tao has made more progress than anyone in decades.
We finally know how big a set of numbers can get before it has to contain a pattern known as a “polynomial progression.”
New work on the problem of “scissors congruence” explains when it’s possible to slice up one shape and reassemble it as another.
Today Google announced that it achieved “quantum supremacy.” Its chief quantum computing rival, IBM, said it hasn’t. The disagreement hinges on what the term really means.
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