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Flat Earth believers may not be that crazy from mathematical point of view
. If one removes the North pole or the South pole, Earth can become flat. -
it doesn’t preserve the metric, curvature is a local invariant
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HA! Heck, the torus has a globally flat Riemannian metric so maybe all the flat earthers are really just donut earthers!
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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Non-differentiable Crag Society
Thanks. Twitter will use this to make your timeline better. UndoUndo
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