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Long-Awaited Mathematics Proof Could Help Scan Earth's Innards


Earth's inner structure

Earth's inner structure could be revealed by the speed at which waves travel from one edge to another.

Credit: Planterary Visions Ltd./Science Photo Library

Mathematicians say that they have solved a major, decades-old problem in geometry: how to reconstruct the inner structure of a mystery object 'X' from knowing only how fast waves travel between any two points on its boundar

From Nature
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