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A short proof of the universality of the fundamental shadow links

arXiv Mathematics · WORLD · Mathematics · 10/30/2026, 12:00:00 AM

arXiv:2610.37718v1 Announce Type: new Abstract: We give a constructive three-dimensional proof of Costantino and Thurston's universality theorem for fundamental shadow links. More precisely, every compact connected oriented three-manifold with empty or toroidal boundary can be obtained by integral Dehn filling along a subset of the boundary components of a fundamental shadow link exterior.

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