# The Universe Speaks in Numbers

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## The Universe Speaks in Numbers: Karen Uhlenbeck interviewed by Graham Farmelo

Season 1, Ep. 22

The interplay between fundamental physics and pure mathematics has led to many remarkable mathematical insights over the past fifty years. Karen Uhlenbeck is one of the mathematicians who made pioneering insights into geometry when studying the physicists' gauge theory of particle interactions. In this podcast, she talks candidly about how many mathematicians came only grudgingly to accept in the 1960s and 1970s that they could do first-class work by focusing on topics whose importance had first been emphasised by physicists, in connection with understanding the real world.

This is one of a series of interviews given by world-class experts to Graham on the themes he explores in his new book *The Universe Speaks in Numbers*.