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Topology
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In Topology, When Are Two Shapes the Same?
topologyBy Kevin HartnettSeptember 28, 2021As topologists seek to classify shapes, the effort hinges on how to define a manifold and what it means for two of them to be equivalent.David Parker/Science SourceSorting a collection of shapes is child’s play. Circles here, squares there, triangles in their own pile. But if you take the task seriously,…