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Urmila Mahadev spent eight years in graduate school solving one of the most basic questions in quantum computation: How do you know whether a quantum computer has done anything quantum at all?
Two mathematicians have found what they say is a hole at the heart of a proof that has convulsed the mathematics community for nearly six years.
In math, sometimes the most common things are the hardest to find.
Quanta’s In Theory video series returns with an exploration of a mysterious mathematical pattern found throughout nature.