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Using computers to solve geometric problems. Questions with this tag should typically have at least one other tag indicating what sort of geometry is involved, such as ag.algebraic-geometry or mg.metric-geometry.
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If a polyhedron in $\mathbb{R}^3$ has local intersections, does it also have more global int...
Sorry, my previous answer is based on the impression that the "manifold" can mean "manifold with boundary. In that case, the countercase can be constructed easily (see my previous answer).
But for tru …