
How Squishy Math Is Revealing Doughnuts in the Brain
Topology, sometimes called rubber sheet geometry, is finding patterns in the brain, drugs and evolution

Kelsey Houston-Edwards is a mathematician and journalist. She formerly wrote and hosted the online show PBS Infinite Series. Credit: Nick Higgins

Topology, sometimes called rubber sheet geometry, is finding patterns in the brain, drugs and evolution

Percolation theory illuminates the behavior of many kinds of networks, from cell-phone connections to disease transmission

Philosophers cannot agree on whether mathematical objects exist or are pure fictions
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